Move to pty-node over custom pty2.js

core/event_scheduler.js

@@ -9,7 +9,7 @@ const Log					= require('./logger.js').log;
 const _						= require('lodash');
 const later					= require('later');
 const path					= require('path');
-const pty					= require('ptyw.js');
+const pty					= require('node-pty');
 const sane					= require('sane');
 const moment				= require('moment');
 const paths					= require('path');