updated install script for opencv to 2.4.8
updated install script for opencv to 2.4.8

printedheart/drwn,dzenteno2/drwn,dzenteno2/drwn,dzenteno2/drwn,printedheart/drwn,printedheart/drwn,xtheunknown0/drwn,printedheart/drwn,dzenteno2/drwn,dzenteno2/drwn,xtheunknown0/drwn,dzenteno2/drwn,printedheart/drwn,xtheunknown0/drwn,xtheunknown0/drwn,xtheunknown0/drwn,xtheunknown0/drwn,printedheart/drwn