increase MAX_WAIT_TIME

Summary:
increase the `MAX_WAIT_TIME` in FileWatcher since live reloading doesn't work for a lot of users on windows when developing android. There may be a better timeout than arbitrarily tripling it, I'm sure the original developer would be able to pick out a good one, but many of us have used this change to finally be able to use RN here on windows.

fixes facebook/react-native#8784 facebook/react-native#7257
Closes facebook/react-native#10690

Differential Revision: D4126110

Pulled By: mkonicek

fbshipit-source-id: 9b6f188fe9d39bcdcc2b38392dfc644a518296b2

react-packager/src/node-haste/FileWatcher/index.js

@@ -13,7 +13,7 @@ const denodeify = require('denodeify');
 const sane = require('sane');
 const execSync = require('child_process').execSync;
 
-const MAX_WAIT_TIME = 120000;
+const MAX_WAIT_TIME = 360000;
 
 const detectWatcherClass = () => {
   try {