Update requirement about SDL to SDL2
Update requirement about SDL_image to SDL2_image
Adding working .travis.yml file
Adding build status to README.md
Removing branches from travis.yml
Fixing notifications in travis.yml
Removing IRC notifications and enabling email notifications to supertux-commit@lists.lethargik.org
-j4 for all dependencies
Using j5 for all make statements
Reset angle before starting kill animation
Using variables for version numbers in travis.yml
All environment variables in one line
Update CMake requirement to latest version
Fix grammar mistake in README.md
[ci skip]
Using un-optimized version of liane.
Optimized version had background issues.
Translation updates
addition of appdata
missing file
Replaced Ref and RefCounter with std::shared_ptr<>
Replaced ::iterator stuff with auto