Fix lint errors

ui/app/add-token.js

@@ -3,7 +3,7 @@ const Component = require('react').Component
 const classnames = require('classnames')
 const h = require('react-hyperscript')
 const connect = require('react-redux').connect
-const R = require('ramda');
+const R = require('ramda')
 const Fuse = require('fuse.js')
 const contractMap = require('eth-contract-metadata')
 const TokenBalance = require('./components/token-balance')