1. Added auto-refresh of butler status buffer.  Auto-refresh feature can be switched on or off with customizable variable, or it can be toggled with the "a" key.
2. Added butler-quit, bound to "q"
3. Wrote documentation for all interactive functions.
Merge pull request #7 from killdash9/master

Configurable auto-refresh, q to quit, documentation

Looks great to me, thanks for the submission!