fix helper ref

src/app.js

@@ -12,7 +12,7 @@ var OffsetToLineColumnConverter = require('./lib/offsetToLineColumnConverter')
 
 var QueryParams = require('./lib/query-params')
 var GistHandler = require('./lib/gist-handler')
-var helpers = require('./lib/helpers')
+var helpers = require('./lib/helper')
 var Storage = require('./storage')
 var Browserfiles = require('./app/files/browser-files')
 var chromeCloudStorageSync = require('./app/files/chromeCloudStorageSync')

src/app/panels/file-panel.js

@@ -10,7 +10,7 @@ var modalDialog = require('../ui/modaldialog')
 var modalDialogCustom = require('../ui/modal-dialog-custom')
 var QueryParams = require('../../lib/query-params')
 var queryParams = new QueryParams()
-var helpers = require('../../lib/helpers')
+var helpers = require('../../lib/helper')
 
 var remix = require('ethereum-remix')
 var styleGuide = remix.ui.styleGuide