Features/pomodoro cmus

Few enhancements for `pomodoro` and `cmus` plugin.

 1. `pomodoro`:
     * Right click now resets timer (stops it)
     * `format` could be configured now 
     * Output _'progress'_: (1/4, 2/4, 3/4 etc)

2. `cmus`:
    * Adequate message when no `cmus` is running
    * Attempt to extract title/artist from filename/stream
also "seconds" instead of "secods"

2014-12-09 18:34 GMT+01:00 enkore <notifications@github.com>:

> In i3pystatus/pomodoro.py
> <https://github.com/enkore/i3pystatus/pull/145#discussion-diff-21545141>:
>
> > @@ -27,6 +27,7 @@ class Pomodoro(IntervalModule):
> >          ('break_duration', 'Short break duration in secods'),
> >          ('long_break_duration', 'Long break duration in secods'),
> >          ('short_break_count', 'Short break count before first long break'),
> > +        format
>
> "format" instead. With description would be even better.
>
> —
> Reply to this email directly or view it on GitHub
> <https://github.com/enkore/i3pystatus/pull/145/files#r21545141>.
>