Evaulate script in main queue. This make the console safely run code that change UI.
update podspec
Merge branch 'master' of github.com:siuying/IGJavaScriptConsole

Conflicts:
	IGJavaScriptConsole.podspec
	IGJavaScriptConsole/Server/IGJavaScriptEvaulatorWebSocket.m
	IGJavaScriptConsole/Server/IGRubyEvaulatorWebSocket.m