* Updated the enable gem and disable gem API
Renamed remove_gem_project.py -> disable_gem.py
Renamed add_gem_project.py -> enable_gem.py
Renamed the "add-gem-to-project" command -> "enable-gem"
Renamed the "remove-gem-from-project" command -> "disable-gem"
Fixed the parsing of the enabled gems from the enabled_gems.cmake file
* Adding newline to the end of the CMakeLists.txt