Merge pull request #3 from MaikKlein/master

add travis to the readme
Render_Szenegraph_Cleanup

Just cleaned up some comments and failures. Now the scenegraph is
working with the new repository version
Merge pull request #1 from MarcelBock/master

Render_Szenegraph_Cleanup
Revert "Render_Szenegraph_Cleanup"
Merge pull request #2 from MarcelBock/revert-1-master

Revert "Render_Szenegraph_Cleanup"
Clean_Up_Scenegraph

Just cleaned up some comments and syntax errors. Now everything will
work fine with the scenegraph in the new repository
Merge pull request #5 from MarcelBock/Marcel_TestArea

Scenegraph Clean Up
update travis cmake