fix for nuget restore (previously didn't function on some people's machines)
fix for nuget restore (previously didn't function on some people's machines)

paseb/MixedRealityToolkit-Unity,joevdh/HoloToolkit-Unity,darax/HoloToolkit-Unity,chadbramwell/HoloToolkit-Unity,vbandi/HoloToolkit-Unity,paseb/HoloToolkit-Unity,NeerajW/HoloToolkit-Unity,CameronVetter/HoloToolkit-Unity,HoloFan/HoloToolkit-Unity,thewesleycrushers/hololens,micthom-msft/HoloToolkit-Unity,out-of-pixel/HoloToolkit-Unity,dbastienMS/HoloToolkit-Unity,HattMarris1/HoloToolkit-Unity,willcong/HoloToolkit-Unity,davesmits/HoloToolkit-Unity,ForrestTrepte/HoloToolkit-Unity,CombatCube/HoloAtelier