Add appraisal to begin testing against sidekiq 3.0 (master)
Add redis-server to Travis CI services
Fix bad message setup.

Message setup in the test was using symbols for the key, but, the tests themselves
were using a string as the key.

This doesn't seem to break anything...
Merge pull request #15 from worst/master

Fix bad message setup.
Ability to dynamically pass in period to throttle options
Added Tests for Period as a Proc
Merge pull request #17 from kainage/master

Option to pass period as a proc
Syntax highlight gem line
Update changelog with changes made in pull #17
Document dynamic periods and expand on docs
Prepare for 0.4.0 release
Update ruby compatibility section
Add gem version badge
Update .rspec for RSpec 3 compatibility
Update rate limit spec for RSpec 3 compatibility
Loosen sidekiq dependency to allow < 4.0
Update specs to use expect() syntax (using transpec)
Remove unnecessary spec.opts
Setup appraisal 1.0 for continuous integration
Bump version to 0.4.1