Merge pull request #1 from vrsys/develop

Develop
restrict to master branch
Merge branch 'develop'
Merge pull request #14 from scholli/develop

Develop
RAW Geometry is not supported (used for volumes)
Integrate VolumeLoader into GeometryLoader

Load Volume with create_geometry_from_file
Material doesnt matter
Change indentation.
Remove unused load function
Volume Rendering CompositingPass fixed
Messages in Volume load function erased
Output messages removed

Even less output, yeah!
removed a message from find_boost.cmake
fixed missing link libraries under linux
removed shader debug output
merged new Oculus classes
implemented flags to flip x and y coordinates on TexturedQuadNode
removed wrong if
added directional light
added video3DNode class
serializer updated (Video3D)