Remove resque-clues dependency.

We now load resque-clues if available and configure a no op
event publisher, or fail silently and continue otherwise.
This allows stressque to be used without resque-clues, but
if someone has installed it, it will be used.
Removed active support dependency.

Opted for an easy camelizer.
Bumping revision
Merge branch 'master' of github.com:PeopleAdmin/stressque