Update node-buffer

Author: hdgarrood

bower.json

@@ -18,7 +18,7 @@
   },
   "dependencies": {
     "purescript-eff": "~0.1.1",
-    "purescript-node-buffer": "~0.1.0",
+    "purescript-node-buffer": "~0.2.0",
     "purescript-prelude": "~0.1.2"
   }
 }