Bump sprockets from 2.4.5 to 2.12.5

Gemfile.lock

@@ -1,13 +1,13 @@
 GEM
   remote: http://rubygems.org/
   specs:
-    activesupport (3.2.12)
-      i18n (~> 0.6)
+    activesupport (3.2.22.5)
+      i18n (~> 0.6, >= 0.6.4)
       multi_json (~> 1.0)
     bourbon (3.1.1)
       sass (>= 3.2.0)
       thor
-    chunky_png (1.2.7)
+    chunky_png (1.4.0)
     coffee-script (2.2.0)
       coffee-script-source
       execjs
@@ -16,16 +16,18 @@ GEM
       chunky_png (~> 1.2)
       fssm (>= 0.2.7)
       sass (~> 3.1)
-    execjs (1.4.0)
+    execjs (1.4.1)
       multi_json (~> 1.0)
+    ffi (1.14.2)
     fssm (0.2.10)
-    haml (4.0.0)
+    haml (5.2.1)
+      temple (>= 0.8.0)
       tilt
-    hike (1.2.1)
+    hike (1.2.3)
     http_router (0.10.2)
       rack (>= 1.0.0)
       url_mount (~> 0.2.1)
-    i18n (0.6.4)
+    i18n (0.6.11)
     listen (0.7.3)
     maruku (0.6.1)
       syntax (>= 1.0.0)
@@ -54,11 +56,11 @@ GEM
       padrino-helpers (= 0.10.7)
       sass (>= 3.1.20)
       uglifier (~> 1.2.6)
-    middleman-sprockets (3.0.9)
+    middleman-sprockets (3.0.11)
       middleman-more (>= 3.0.11)
-      sprockets (~> 2.1, < 2.5)
+      sprockets (~> 2.1)
       sprockets-sass (~> 0.9.1)
-    multi_json (1.7.0)
+    multi_json (1.15.0)
     padrino-core (0.10.7)
       activesupport (~> 3.2.0)
       http_router (~> 0.10.2)
@@ -68,28 +70,35 @@ GEM
     padrino-helpers (0.10.7)
       i18n (~> 0.6)
       padrino-core (= 0.10.7)
-    rack (1.4.5)
-    rack-protection (1.5.0)
+    rack (1.4.7)
+    rack-protection (1.5.5)
       rack
-    rack-test (0.6.2)
+    rack-test (0.6.3)
       rack (>= 1.0)
-    rb-fsevent (0.9.3)
-    sass (3.2.7)
+    rb-fsevent (0.9.8)
+    rb-inotify (0.10.1)
+      ffi (~> 1.0)
+    sass (3.7.4)
+      sass-listen (~> 4.0.0)
+    sass-listen (4.0.0)
+      rb-fsevent (~> 0.9, >= 0.9.4)
+      rb-inotify (~> 0.9, >= 0.9.7)
     sinatra (1.3.6)
       rack (~> 1.4)
       rack-protection (~> 1.3)
       tilt (~> 1.3, >= 1.3.3)
-    sprockets (2.4.5)
+    sprockets (2.12.5)
       hike (~> 1.2)
       multi_json (~> 1.0)
       rack (~> 1.0)
       tilt (~> 1.1, != 1.3.0)
     sprockets-sass (0.9.1)
       sprockets (~> 2.0)
       tilt (~> 1.1)
-    syntax (1.0.0)
+    syntax (1.2.2)
+    temple (0.8.2)
     thor (0.15.4)
-    tilt (1.3.5)
+    tilt (1.3.7)
     uglifier (1.2.7)
       execjs (>= 0.3.0)
       multi_json (~> 1.3)