Added Personal Package Archive, https://launchpad.net/~zoogie/+archive/sdl2-snapshots to travis. So that it hopefully find SDL2.
Added Personal Package Archive, https://launchpad.net/~zoogie/+archive/sdl2-snapshots to travis. So that it hopefully find SDL2.

fifengine/fifengine,Niektory/fifengine,fifengine/fifengine,Niektory/fifengine,Niektory/fifengine,fifengine/fifengine