Adding note related to building project
Adding note related to building project

Added note regarding the architecture type needed to properly build/run the project from the examples
chadbramwell/HoloToolkit-Unity,willcong/HoloToolkit-Unity,paseb/MixedRealityToolkit-Unity,ForrestTrepte/HoloToolkit-Unity,out-of-pixel/HoloToolkit-Unity,davesmits/HoloToolkit-Unity,vbandi/HoloToolkit-Unity,dbastienMS/HoloToolkit-Unity,HattMarris1/HoloToolkit-Unity,NeerajW/HoloToolkit-Unity,CameronVetter/HoloToolkit-Unity,paseb/HoloToolkit-Unity,darax/HoloToolkit-Unity,HoloFan/HoloToolkit-Unity