Clean Up Scenegraph 2.0

Just changed the "\" to "/" so it will be accepted cross platform
Merge pull request #8 from MarcelBock/Marcel_TestArea

Clean Up Scenegraph 2.0
add Texture

Die Texture Klassen, sind denen im CVK sehr ähnlich, ich habe lediglich
einige Kleinigkeiten geändert.
Merge pull request #9 from NicolasKlee/master

add Texture Classes
dont need this for now
added new object
new Testcase
new shader for testcase
added fbo
vars are public because for now we dont have getter
cleaning up
without fbo
Merge pull request #11 from KMichalski/master

some changes without the fbo
Merge pull request #2 from GameEngineKoblenz/master

update#2