add nodeVersion

Author: Kelly Selden

manifest.json

@@ -2,16 +2,19 @@
   "ember-modules-codemod": {
     "version": "2.16.0-beta.1",
     "projectTypes": ["app", "addon"],
+    "nodeVersion": "4",
     "commands": ["ember-modules-codemod"]
   },
   "ember-qunit-codemod": {
     "version": "3.0.0-beta.1",
     "projectTypes": ["app", "addon"],
+    "nodeVersion": "4",
     "commands": ["jscodeshift -t https://rawgit.com/rwjblue/ember-qunit-codemod/master/ember-qunit-codemod.js ./tests/"]
   },
   "es5-getter-ember-codemod": {
     "version": "3.1.0-beta.1",
     "projectTypes": ["app", "addon"],
+    "nodeVersion": "4",
     "commands": ["jscodeshift -t https://rawgit.com/rondale-sc/es5-getter-ember-codemod/master/es5-getter-ember-codemod.js ./app"]
   }
 }