perf: remove redundant files from published npm package

Author: MrSwitch

package.json

@@ -19,6 +19,10 @@
     "linkedin",
     "twitter"
   ],
+  "files": [
+	  "dist/",
+	  "src/"
+  ],
   "author": {
     "name": "Andrew Dodson",
     "email": "[email protected]"
@@ -47,4 +51,4 @@
     "shunt": "^0.1.4",
     "sinon": "~1.7.3"
   }
-}
+}