start museIO automatically

[marionleborgne]

@jnaulty, following up with our discussion:

• look for Connecting to paired device in stdout
• if you don't find it, raise exception like in my code unable_to_start_museIO
• if you find it, then look for open! in stdout
• loop and check every 5 sec to see if you find it
• if you don't find it, print message for use (check if bluetooth enabled and muse connected)
• if you find it, return :simple_smile: