Updated readme (also moved Tagalong section next to the other ones)
Updated readme (also moved Tagalong section next to the other ones)

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