Add `pg` as dependency and update node version

One of the dependencies seemed to be broken with the previous node version, but this node version worked perfectly

package.json

@@ -19,7 +19,8 @@
     "redis-url": "0.1.0",
     "redis": "0.8.1",
     "uglify-js": "1.3.3",
-    "busboy": "0.2.4"
+    "busboy": "0.2.4",
+    "pg": "4.1.1"
   },
   "devDependencies": {
     "mocha": "*",
@@ -27,7 +28,7 @@
   },
   "bundledDependencies": [],
   "engines": {
-    "node": "0.8.10",
+    "node": "0.10.35",
     "npm": "1.1.49"
   },
   "bin": {