add controllers to root scripts folder

app/scripts/metamask-controller.js

@@ -11,10 +11,10 @@ const streamIntoProvider = require('web3-stream-provider/handler')
 const MetaMaskProvider = require('web3-provider-engine/zero.js')
 const setupMultiplex = require('./lib/stream-utils.js').setupMultiplex
 const KeyringController = require('./keyring-controller')
-const PreferencesController = require('./lib/controllers/preferences')
-const CurrencyController = require('./lib/controllers/currency')
+const PreferencesController = require('./controllers/preferences')
+const CurrencyController = require('./controllers/currency')
 const NoticeController = require('./notice-controller')
-const ShapeShiftController = require('./lib/controllers/shapeshift')
+const ShapeShiftController = require('./controllers/shapeshift')
 const MessageManager = require('./lib/message-manager')
 const PersonalMessageManager = require('./lib/personal-message-manager')
 const TxManager = require('./transaction-manager')