Fix lint in local-cli

Reviewed By: cpojer

Differential Revision: D4166993

fbshipit-source-id: 9a8249175d98b42d7557817846d8c09c9769485e

local-cli/bundle/output/writeFile.js

@@ -8,9 +8,10 @@
  */
 'use strict';
 
-const fs = require('fs');
 const Promise = require('promise');
 
+const fs = require('fs');
+
 function writeFile(file, data, encoding) {
   return new Promise((resolve, reject) => {
     fs.writeFile(