Update install_via_GitHub.rst
Update install_via_GitHub.rst
keflavich/pyspeckit,low-sky/pyspeckit,mikelum/pyspeckit,e-koch/pyspeckit,jpinedaf/pyspeckit,jpinedaf/pyspeckit,keflavich/pyspeckit,pyspeckit/pyspeckit,e-koch/pyspeckit,allisony/pyspeckit,allisony/pyspeckit,mikelum/pyspeckit,pyspeckit/pyspeckit,low-sky/pyspeckit,vlas-sokolov/pyspeckit,vlas-sokolov/pyspeckit