Rename Sidekiq::Status::Worker#num to Sidekiq::Status::Worker#at
Improve Sidekiq::Status::Worker#at interface
Add documentation about web interface
Merge pull request #22 from Silex/master

Change #at interface
Merge remote-tracking branch 'sidekiq-v3/master' for Sidekiq V3 support
works better without `-` in the end of every ERB tag
support for sidekiq3.0 and not set total