Adds necessary instructions in INSTALL.rst
Adds necessary instructions in INSTALL.rst

henn/hil_sahil,kylehogan/hil,henn/hil,kylehogan/haas,meng-sun/hil,kylehogan/hil,henn/haas,henn/hil_sahil,SahilTikale/haas,henn/hil,meng-sun/hil,CCI-MOC/haas