Merge pull request #16 from vodik/master

Don't connect to pulseaudio with PA_CONTEXT_NOFAIL
Clamp volumes between a more intelligent range

This handles volume increment/decrement better when volume is >100%.

If volume is above 100%, incrementing or decrementing the volume
will automatically drop it back down to 100%. It be better will
decrement as expected and not increment further up.

Signed-off-by: Simon Gomizelj <simongmzlj@gmail.com>