Update install docs with release install instructions.
Update install docs with release install instructions.

ual/urbansim,bricegnichols/urbansim,VladimirTyrin/urbansim,apdjustino/urbansim,VladimirTyrin/urbansim,AZMAG/urbansim,UDST/urbansim,bricegnichols/urbansim,UDST/urbansim,apdjustino/urbansim,waddell/urbansim,VladimirTyrin/urbansim,UDST/urbansim,SANDAG/urbansim,waddell/urbansim,SANDAG/urbansim,SANDAG/urbansim,AZMAG/urbansim,synthicity/urbansim,synthicity/urbansim,SANDAG/urbansim,synthicity/urbansim,waddell/urbansim,AZMAG/urbansim,ual/urbansim,AZMAG/urbansim,apdjustino/urbansim,waddell/urbansim,apdjustino/urbansim,synthicity/urbansim,bricegnichols/urbansim,UDST/urbansim,bricegnichols/urbansim,ual/urbansim,VladimirTyrin/urbansim,ual/urbansim