fix(gen): allow generator to be transpiled as a node_module

closes #1244

Author: kingcody

app/index.js

@@ -1,7 +1,9 @@
 'use strict';
 
 // Register the Babel require hook
-require('babel-core/register');
+require('babel-core/register')({
+  only: /generator-angular-fullstack\/(?!node_modules)/
+});
 
 // Export the generator
 exports = module.exports = require('./generator');

endpoint/index.js

@@ -1,7 +1,9 @@
 'use strict';
 
 // Register the Babel require hook
-require('babel-core/register');
+require('babel-core/register')({
+  only: /generator-angular-fullstack\/(?!node_modules)/
+});
 
 // Export the generator
 exports = module.exports = require('./generator');