Adds remove 'index' command.
Added extra space between functions.
Fixed
C:299, 0: Wrong hanging indentation.
index,
   ^ (bad-continuation)
C:300, 0: Wrong hanging indentation.
queue_length)
^ (bad-continuation)
Added function remove_range_from_queue(sonos, start, stop)
Merge pull request #22 from petteraas/remove_range_from_queue

Remove range from queue