Add some keywords

package.json

@@ -4,5 +4,6 @@
   "main": "index.js",
   "repository": "http://git.cryto.net/joepie91/node-modify-url.git",
   "author": "Sven Slootweg <admin@cryto.net>",
-  "license": "WTFPL OR CC0-1.0"
+  "license": "WTFPL OR CC0-1.0",
+  "keywords": ["url", "modify", "change", "resolve"]
 }