Please specify a license

[abhirupkgp]

@ZGCTroy, @TinyTigerPan, you may not be aware of this, but legally, without a license, no one can use your code. Can you please specify a license?

http://opensource.stackexchange.com/q/1720/775

[ZGCTroy]

Thanks for your kindly remind. We add a MIT LICENSE now.