Better tester port determining. Turns out pid is prone to duplication

Author: balupton

src/lib/testers.coffee

@@ -10,7 +10,7 @@ CSON = require('cson')
 DocPad = require(__dirname+'/docpad')
 
 # Prepare
-pluginPort = 2000+process.pid
+pluginPort = 2000+String((new Date()).getTime()).substr(-6,4)
 testers = {
 	balUtil,
 	chai,