Add travis-ci

[kobelobster]

Actual:

• There is no set up CI for checking code that will be pushed to this repository

Expected:

• Code pushed to this repository shall be checked via CI

Also, as there is #10 please register this repository on travis-ci

[cjost1988]

Thank you @piotr-zuralski. Thank you for contributing. At the moment there is a lot work to do, but we'll have a look in the next few days.