Travis integration

I tried to get [RSpec](http://rspec-puppet.com/) running for the generated manifests and wanted to let [Travis](https://travis-ci.org/) test the results + PHPUnit test suite. However it is not possible to do that on Travis because a Travis worker is bound to one language. In our case we would need a PHP and a Ruby Environment (for RSpec).

I do not know if I get something useful running with RSpec but we could use Travis for the [PHPUnit test suite](http://about.travis-ci.org/docs/user/languages/php/) anyway.

If you allow this integration you have to:
* go to https://travis-ci.org and signup with your Github Account
* let Travis sync your repositories
* enable puphpet/puphpet for Travis
* enable Travis Hook here on Github
* do the PR merge after all this stuff, this should trigger the first build

Demo run: https://travis-ci.org/frastel/Puphpet/builds/9000384