* Update CMakeLists.txt
Adds support for CPack so that you can make .deb and .rpm packages.
* Update CMakeLists.txt
* Update .travis.yml
* Update .travis.yml
Speedup compiling
* Update .travis.yml
* Update .drone.yml
Speedup compiling
* Update .travis.yml
Remove `-j2` flag because we probably run out of memory when running 2 jobs in parallel and that's why the compilation fails.