ci: added travis config file
ci: added ubuntu dependencies to travis file
ci: travis script updated and notifications added
ci: adding libsdl ppa, using gcc 4.8 now
make: using cmake functionality for finding all libraries
ci: added python3 dependency
ci: added cmake ppa and update it
make: require cmake 2.8.10 because of findglew
ci: using better ppa for updating cmake to >=2.8.10
ci: set freetype includedir manually, echo cmake version