Revert "resolve ala node_module resolution algorithim (NPM v3 support);"

This reverts commit d59e7f2.

Author: rwjblue

index.js

@@ -4,7 +4,7 @@ module.exports = {
   name: 'Ember CLI ic-ajax',
 
   init: function(name) {
-    this.treePaths['vendor'] = require.resolve('ic-ajax').replace('ic-ajax/dist/cjs/main.js', '');
+    this.treePaths['vendor'] = 'node_modules';
   },
 
   included: function(app) {