Mark 5.0.0-dev (#170)

Needed since we did already drop Node.js 4 support and are planning to remove browserify

package.json

@@ -5,7 +5,7 @@
   "engines": {
     "node": ">=6.0.0"
   },
-  "version": "4.2.5-dev",
+  "version": "5.0.0-dev",
   "homepage": "http://cordova.apache.org",
   "repository": {
     "type": "git",