diff --git a/example/package-lock.json b/example/package-lock.json
index 83b0725..5431f95 100644
--- a/example/package-lock.json
+++ b/example/package-lock.json
@@ -1044,7 +1044,7 @@
         "qs": {
           "version": "4.0.0",
           "resolved": "https://registry.npmjs.org/qs/-/qs-4.0.0.tgz",
-          "integrity": "sha1-wx2bdOwn33XlQ6hseHKO2NRiNgc="
+          "integrity": "sha512-8MPmJ83uBOPsQj5tQCv4g04/nTiY+d17yl9o3Bw73vC6XlEm2POIRRlOgWJ8i74bkGLII670cDJJZkgiZ2sIkg=="
         }
       }
     },
@@ -1337,45 +1337,45 @@
     "connect": {
       "version": "2.30.2",
       "resolved": "https://registry.npmjs.org/connect/-/connect-2.30.2.tgz",
-      "integrity": "sha1-jam8vooFTT0xjXTf7JA7XDmhtgk=",
+      "integrity": "sha512-eY4YHls5bz/g6h9Q8B/aVkS6D7+TRiRlI3ksuruv3yc2rLbTG7HB/7T/CoZsuVH5e2i3S9J+2eARV5o7GIYq8Q==",
       "requires": {
         "basic-auth-connect": "1.0.0",
-        "body-parser": "1.13.3",
+        "body-parser": "~1.13.3",
         "bytes": "2.1.0",
-        "compression": "1.5.2",
-        "connect-timeout": "1.6.2",
-        "content-type": "1.0.4",
+        "compression": "~1.5.2",
+        "connect-timeout": "~1.6.2",
+        "content-type": "~1.0.1",
         "cookie": "0.1.3",
-        "cookie-parser": "1.3.5",
+        "cookie-parser": "~1.3.5",
         "cookie-signature": "1.0.6",
-        "csurf": "1.8.3",
-        "debug": "2.2.0",
-        "depd": "1.0.1",
-        "errorhandler": "1.4.3",
-        "express-session": "1.11.3",
+        "csurf": "~1.8.3",
+        "debug": "~2.2.0",
+        "depd": "~1.0.1",
+        "errorhandler": "~1.4.2",
+        "express-session": "~1.11.3",
         "finalhandler": "0.4.0",
         "fresh": "0.3.0",
-        "http-errors": "1.3.1",
-        "method-override": "2.3.10",
-        "morgan": "1.6.1",
+        "http-errors": "~1.3.1",
+        "method-override": "~2.3.5",
+        "morgan": "~1.6.1",
         "multiparty": "3.3.2",
-        "on-headers": "1.0.1",
-        "parseurl": "1.3.2",
+        "on-headers": "~1.0.0",
+        "parseurl": "~1.3.0",
         "pause": "0.1.0",
         "qs": "4.0.0",
-        "response-time": "2.3.2",
-        "serve-favicon": "2.3.2",
-        "serve-index": "1.7.3",
-        "serve-static": "1.10.3",
-        "type-is": "1.6.15",
+        "response-time": "~2.3.1",
+        "serve-favicon": "~2.3.0",
+        "serve-index": "~1.7.2",
+        "serve-static": "~1.10.0",
+        "type-is": "~1.6.6",
         "utils-merge": "1.0.0",
-        "vhost": "3.0.2"
+        "vhost": "~3.0.1"
       },
       "dependencies": {
         "debug": {
           "version": "2.2.0",
           "resolved": "https://registry.npmjs.org/debug/-/debug-2.2.0.tgz",
-          "integrity": "sha1-+HBX6ZWxofauaklgZkE3vFbwOdo=",
+          "integrity": "sha512-X0rGvJcskG1c3TgSCPqHJ0XJgwlcvOC7elJ5Y0hYuKBZoVqWpAMfLOeIh2UI/DCQ5ruodIjvsugZtjUYUw2pUw==",
           "requires": {
             "ms": "0.7.1"
           }
@@ -1383,12 +1383,12 @@
         "ms": {
           "version": "0.7.1",
           "resolved": "https://registry.npmjs.org/ms/-/ms-0.7.1.tgz",
-          "integrity": "sha1-nNE8A62/8ltl7/3nzoZO6VIBcJg="
+          "integrity": "sha512-lRLiIR9fSNpnP6TC4v8+4OU7oStC01esuNowdQ34L+Gk8e5Puoc88IqJ+XAY/B3Mn2ZKis8l8HX90oU8ivzUHg=="
         },
         "qs": {
           "version": "4.0.0",
           "resolved": "https://registry.npmjs.org/qs/-/qs-4.0.0.tgz",
-          "integrity": "sha1-wx2bdOwn33XlQ6hseHKO2NRiNgc="
+          "integrity": "sha512-8MPmJ83uBOPsQj5tQCv4g04/nTiY+d17yl9o3Bw73vC6XlEm2POIRRlOgWJ8i74bkGLII670cDJJZkgiZ2sIkg=="
         }
       }
     },
@@ -2054,7 +2054,8 @@
         },
         "ansi-regex": {
           "version": "2.1.1",
-          "bundled": true
+          "bundled": true,
+          "optional": true
         },
         "aproba": {
           "version": "1.1.1",
@@ -2097,7 +2098,8 @@
         },
         "balanced-match": {
           "version": "0.4.2",
-          "bundled": true
+          "bundled": true,
+          "optional": true
         },
         "bcrypt-pbkdf": {
           "version": "1.0.1",
@@ -2110,6 +2112,7 @@
         "block-stream": {
           "version": "0.0.9",
           "bundled": true,
+          "optional": true,
           "requires": {
             "inherits": "2.0.3"
           }
@@ -2117,6 +2120,7 @@
         "boom": {
           "version": "2.10.1",
           "bundled": true,
+          "optional": true,
           "requires": {
             "hoek": "2.16.3"
           }
@@ -2124,6 +2128,7 @@
         "brace-expansion": {
           "version": "1.1.7",
           "bundled": true,
+          "optional": true,
           "requires": {
             "balanced-match": "0.4.2",
             "concat-map": "0.0.1"
@@ -2131,7 +2136,8 @@
         },
         "buffer-shims": {
           "version": "1.0.0",
-          "bundled": true
+          "bundled": true,
+          "optional": true
         },
         "caseless": {
           "version": "0.12.0",
@@ -2145,30 +2151,36 @@
         },
         "code-point-at": {
           "version": "1.1.0",
-          "bundled": true
+          "bundled": true,
+          "optional": true
         },
         "combined-stream": {
           "version": "1.0.5",
           "bundled": true,
+          "optional": true,
           "requires": {
             "delayed-stream": "1.0.0"
           }
         },
         "concat-map": {
           "version": "0.0.1",
-          "bundled": true
+          "bundled": true,
+          "optional": true
         },
         "console-control-strings": {
           "version": "1.1.0",
-          "bundled": true
+          "bundled": true,
+          "optional": true
         },
         "core-util-is": {
           "version": "1.0.2",
-          "bundled": true
+          "bundled": true,
+          "optional": true
         },
         "cryptiles": {
           "version": "2.0.5",
           "bundled": true,
+          "optional": true,
           "requires": {
             "boom": "2.10.1"
           }
@@ -2203,7 +2215,8 @@
         },
         "delayed-stream": {
           "version": "1.0.0",
-          "bundled": true
+          "bundled": true,
+          "optional": true
         },
         "delegates": {
           "version": "1.0.0",
@@ -2230,7 +2243,8 @@
         },
         "extsprintf": {
           "version": "1.0.2",
-          "bundled": true
+          "bundled": true,
+          "optional": true
         },
         "forever-agent": {
           "version": "0.6.1",
@@ -2249,11 +2263,13 @@
         },
         "fs.realpath": {
           "version": "1.0.0",
-          "bundled": true
+          "bundled": true,
+          "optional": true
         },
         "fstream": {
           "version": "1.0.11",
           "bundled": true,
+          "optional": true,
           "requires": {
             "graceful-fs": "4.1.11",
             "inherits": "2.0.3",
@@ -2304,6 +2320,7 @@
         "glob": {
           "version": "7.1.2",
           "bundled": true,
+          "optional": true,
           "requires": {
             "fs.realpath": "1.0.0",
             "inflight": "1.0.6",
@@ -2315,7 +2332,8 @@
         },
         "graceful-fs": {
           "version": "4.1.11",
-          "bundled": true
+          "bundled": true,
+          "optional": true
         },
         "har-schema": {
           "version": "1.0.5",
@@ -2339,6 +2357,7 @@
         "hawk": {
           "version": "3.1.3",
           "bundled": true,
+          "optional": true,
           "requires": {
             "boom": "2.10.1",
             "cryptiles": "2.0.5",
@@ -2348,7 +2367,8 @@
         },
         "hoek": {
           "version": "2.16.3",
-          "bundled": true
+          "bundled": true,
+          "optional": true
         },
         "http-signature": {
           "version": "1.1.1",
@@ -2363,6 +2383,7 @@
         "inflight": {
           "version": "1.0.6",
           "bundled": true,
+          "optional": true,
           "requires": {
             "once": "1.4.0",
             "wrappy": "1.0.2"
@@ -2370,7 +2391,8 @@
         },
         "inherits": {
           "version": "2.0.3",
-          "bundled": true
+          "bundled": true,
+          "optional": true
         },
         "ini": {
           "version": "1.3.4",
@@ -2380,6 +2402,7 @@
         "is-fullwidth-code-point": {
           "version": "1.0.0",
           "bundled": true,
+          "optional": true,
           "requires": {
             "number-is-nan": "1.0.1"
           }
@@ -2391,7 +2414,8 @@
         },
         "isarray": {
           "version": "1.0.0",
-          "bundled": true
+          "bundled": true,
+          "optional": true
         },
         "isstream": {
           "version": "0.1.2",
@@ -2454,11 +2478,13 @@
         },
         "mime-db": {
           "version": "1.27.0",
-          "bundled": true
+          "bundled": true,
+          "optional": true
         },
         "mime-types": {
           "version": "2.1.15",
           "bundled": true,
+          "optional": true,
           "requires": {
             "mime-db": "1.27.0"
           }
@@ -2466,17 +2492,20 @@
         "minimatch": {
           "version": "3.0.4",
           "bundled": true,
+          "optional": true,
           "requires": {
             "brace-expansion": "1.1.7"
           }
         },
         "minimist": {
           "version": "0.0.8",
-          "bundled": true
+          "bundled": true,
+          "optional": true
         },
         "mkdirp": {
           "version": "0.5.1",
           "bundled": true,
+          "optional": true,
           "requires": {
             "minimist": "0.0.8"
           }
@@ -2526,7 +2555,8 @@
         },
         "number-is-nan": {
           "version": "1.0.1",
-          "bundled": true
+          "bundled": true,
+          "optional": true
         },
         "oauth-sign": {
           "version": "0.8.2",
@@ -2541,6 +2571,7 @@
         "once": {
           "version": "1.4.0",
           "bundled": true,
+          "optional": true,
           "requires": {
             "wrappy": "1.0.2"
           }
@@ -2566,7 +2597,8 @@
         },
         "path-is-absolute": {
           "version": "1.0.1",
-          "bundled": true
+          "bundled": true,
+          "optional": true
         },
         "performance-now": {
           "version": "0.2.0",
@@ -2575,7 +2607,8 @@
         },
         "process-nextick-args": {
           "version": "1.0.7",
-          "bundled": true
+          "bundled": true,
+          "optional": true
         },
         "punycode": {
           "version": "1.4.1",
@@ -2584,7 +2617,8 @@
         },
         "qs": {
           "version": "6.4.0",
-          "bundled": true,
+          "resolved": "https://registry.npmjs.org/qs/-/qs-6.4.0.tgz",
+          "integrity": "sha512-Qs6dfgR5OksK/PSxl1kGxiZgEQe8RqJMB9wZqVlKQfU+zzV+HY77pWJnoJENACKDQByWdpr8ZPIh1TBi4lpiSQ==",
           "optional": true
         },
         "rc": {
@@ -2608,6 +2642,7 @@
         "readable-stream": {
           "version": "2.2.9",
           "bundled": true,
+          "optional": true,
           "requires": {
             "buffer-shims": "1.0.0",
             "core-util-is": "1.0.2",
@@ -2650,13 +2685,15 @@
         "rimraf": {
           "version": "2.6.1",
           "bundled": true,
+          "optional": true,
           "requires": {
             "glob": "7.1.2"
           }
         },
         "safe-buffer": {
           "version": "5.0.1",
-          "bundled": true
+          "bundled": true,
+          "optional": true
         },
         "semver": {
           "version": "5.3.0",
@@ -2676,6 +2713,7 @@
         "sntp": {
           "version": "1.0.9",
           "bundled": true,
+          "optional": true,
           "requires": {
             "hoek": "2.16.3"
           }
@@ -2703,22 +2741,24 @@
             }
           }
         },
-        "string_decoder": {
-          "version": "1.0.1",
-          "bundled": true,
-          "requires": {
-            "safe-buffer": "5.0.1"
-          }
-        },
         "string-width": {
           "version": "1.0.2",
           "bundled": true,
+          "optional": true,
           "requires": {
             "code-point-at": "1.1.0",
             "is-fullwidth-code-point": "1.0.0",
             "strip-ansi": "3.0.1"
           }
         },
+        "string_decoder": {
+          "version": "1.0.1",
+          "bundled": true,
+          "optional": true,
+          "requires": {
+            "safe-buffer": "5.0.1"
+          }
+        },
         "stringstream": {
           "version": "0.0.5",
           "bundled": true,
@@ -2727,6 +2767,7 @@
         "strip-ansi": {
           "version": "3.0.1",
           "bundled": true,
+          "optional": true,
           "requires": {
             "ansi-regex": "2.1.1"
           }
@@ -2739,6 +2780,7 @@
         "tar": {
           "version": "2.2.1",
           "bundled": true,
+          "optional": true,
           "requires": {
             "block-stream": "0.0.9",
             "fstream": "1.0.11",
@@ -2788,7 +2830,8 @@
         },
         "util-deprecate": {
           "version": "1.0.2",
-          "bundled": true
+          "bundled": true,
+          "optional": true
         },
         "uuid": {
           "version": "3.0.1",
@@ -2813,7 +2856,8 @@
         },
         "wrappy": {
           "version": "1.0.2",
-          "bundled": true
+          "bundled": true,
+          "optional": true
         }
       }
     },
@@ -5257,11 +5301,6 @@
         "readable-stream": "1.1.14"
       }
     },
-    "string_decoder": {
-      "version": "0.10.31",
-      "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-0.10.31.tgz",
-      "integrity": "sha1-YuIDvEF2bGwoyfyEMB2rHFMQ+pQ="
-    },
     "string-width": {
       "version": "2.1.1",
       "resolved": "https://registry.npmjs.org/string-width/-/string-width-2.1.1.tgz",
@@ -5291,6 +5330,11 @@
         }
       }
     },
+    "string_decoder": {
+      "version": "0.10.31",
+      "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-0.10.31.tgz",
+      "integrity": "sha1-YuIDvEF2bGwoyfyEMB2rHFMQ+pQ="
+    },
     "stringstream": {
       "version": "0.0.5",
       "resolved": "https://registry.npmjs.org/stringstream/-/stringstream-0.0.5.tgz",