Feature Travis

https://travis-ci.org/massix/server-game/builds/19871850 \o/

Now we have the ~~Software Factory~~ Travis Continuous Integration going and building fine!

We might want to switch the test phase into the script one, I'm not sure on where that should go..

@dchilot: could you please also integrate the gcov tests (I will try to do something for valgrind if needed)