Adding logo images for MRTK
Adding logo images for MRTK

HattMarris1/HoloToolkit-Unity,paseb/MixedRealityToolkit-Unity,out-of-pixel/HoloToolkit-Unity,NeerajW/HoloToolkit-Unity,willcong/HoloToolkit-Unity,ForrestTrepte/HoloToolkit-Unity,dbastienMS/HoloToolkit-Unity,paseb/HoloToolkit-Unity,HoloFan/HoloToolkit-Unity