bumping node version to >= 0.5.2 for requiring json files

package.json

@@ -74,7 +74,7 @@
     "sequelize": "bin/sequelize"
   },
   "engines": {
-    "node": ">=0.4.6"
+    "node": ">=0.5.2"
   },
   "license": "MIT"
-}
\ No newline at end of file
+}