Basic CI configuration

Hi, I have been experiencing problems with your plugin, and I have made a travis config file to allow you to test that with CI. It's dependencies depend on go >= 1.2, so you should preferably state that in the README.

For the moment, I am not obtaining the result I expected, as haven't achieved to have the CI script fail when it fails. It's quite hacky the thing I did because I saw no way of asserting that the binaries have been correctly installed.

Hope this gives you an starting point.