fix(package): update config to version 3.0.0

Closes #28

Author: greenkeeper[bot]

package.json

@@ -27,7 +27,7 @@
   "author": "Sam Richard <[email protected]>",
   "license": "Apache-2.0",
   "dependencies": {
-    "config": "^1.24.0",
+    "config": "^3.0.0",
     "forever": "^0.15.3",
     "gulp": "^3.9.1",
     "gulp-concat": "^2.6.0",