Fix dependency reference

app/scripts/metamask-controller.js

@@ -1,5 +1,5 @@
 const extend = require('xtend')
-const EthStore = require('eth-store')
+const EthStore = require('./lib/eth-store')
 const MetaMaskProvider = require('web3-provider-engine/zero.js')
 const KeyringController = require('./keyring-controller')
 const NoticeController = require('./notice-controller')