[CHORE] Update es5-getter-ember-codemod to new syntax

Fixes #9

Author: rajasegar

manifest.json

@@ -32,7 +32,7 @@
     },
     "projectOptions": ["app", "addon"],
     "nodeVersion": "4.0.0",
-    "commands": ["jscodeshift -t https://rawgit.com/rondale-sc/es5-getter-ember-codemod/a2f9fc1c14ba30afc48cb7106ad259eb78dee9b7/es5-getter-ember-codemod.js ./app"]
+    "commands": ["github:rondale-sc/es5-getter-ember-codemod es5-getter-ember-codemod app/**/*.js"]
   },
   "qunit-dom-codemod": {
     "versions": {