Start continuous integration need to sign in  travis-ci.org

In order to start continuous integration,  i commited the `.travis.yml` .
And the repository need to start in [travis-ci.org](https://travis-ci.org/profile/kangyijie5473?offset=0) .
I wrote a [blog](http://blog.csdn.net/xiyoulinux_kangyijie/article/details/78249304) to introduce how to do it simply :).