fix install instructions
fix install instructions

jayrambhia/SimpleCV2,nils-werner/SimpleCV,hayd/SimpleCV,onaclovtech/SimpleCV,jyt109/SimpleCV,beni55/SimpleCV,sightmachine/SimpleCV,nils-werner/SimpleCV,jayrambhia/SimpleCV2,beni55/SimpleCV,nikhilgk/SimpleCV,tpltnt/SimpleCV,jlegendary/SimpleCV,sightmachine/SimpleCV,beni55/SimpleCV,nikhilgk/SimpleCV,nils-werner/SimpleCV,hayd/SimpleCV,nikhilgk/SimpleCV,jyt109/SimpleCV,jlegendary/SimpleCV,onaclovtech/SimpleCV,hurdlea/SimpleCV,gskielian/SimpleCV,tpltnt/SimpleCV,beni55/SimpleCV,gskielian/SimpleCV,jayrambhia/SimpleCV2,sightmachine/SimpleCV2,tpltnt/SimpleCV,jyt109/SimpleCV,tpltnt/SimpleCV,sightmachine/SimpleCV2,nikhilgk/SimpleCV,sightmachine/SimpleCV2,jlegendary/SimpleCV,jlegendary/SimpleCV,sightmachine/SimpleCV,gskielian/SimpleCV,hurdlea/SimpleCV,sightmachine/SimpleCV,hurdlea/SimpleCV,hurdlea/SimpleCV,jyt109/SimpleCV,nils-werner/SimpleCV,beni55/SimpleCV,onaclovtech/SimpleCV,tpltnt/SimpleCV,sightmachine/SimpleCV,jlegendary/SimpleCV,gskielian/SimpleCV,jyt109/SimpleCV,onaclovtech/SimpleCV,hayd/SimpleCV,hayd/SimpleCV,jayrambhia/SimpleCV2,hayd/SimpleCV,nikhilgk/SimpleCV,onaclovtech/SimpleCV,gskielian/SimpleCV,nils-werner/SimpleCV,hurdlea/SimpleCV,sightmachine/SimpleCV2