-n/--non-interactive no longer disables color automatically

If a user wants non-interactive, no-color, they can use
  bosh -n --no-color

Change-Id: I3ccbdb1eef0d337dae08165e74f741de430c5029
Merge pull request #9 from drnic/colorful-non-interactive

-n/--non-interactive no longer disables color automatically