Add travis config file

[xantares]

travis continuous integration service must be enabled from repo settings

[smortex]

Doesn't it make sense to install cutter as a dependency and run the test suite shipped with libnfc?

I understand that checking that the software builds is a good start (-Wall -Wextra -Werror -pedantic may be advisable in such a case however), but building successfully a broken software does not really help I think.

[xantares]

I know it's not getting better than that

[neomilium]

Any improvement ?

[neomilium]

Thanks. Hope someone will improve it later.