Use resque redis namespace
Merge branch 'master' of https://github.com/pavels/resque-scheduler into pavels-master

Conflicts:
	lib/resque/scheduler_locking.rb
Add test cases for #master_lock_key

Add test casese for Resque::SchedulerLocking#master_lock_key.
Merge pull request #313 from bugant/pavels-master

Redis namespace