Fixe gem build error ERROR: (Gem::InvalidSpecificationException)

Duplicate dependency on rspec (>= 2.0.0, development), (>= 2.0.0)
Make sure sidekiq is required
Fix for RSpec 3 Support
More Rspec 3 Fixes
Updates CHANGES.md for 1.1.0 release
Updates CHANGES.md for 1.1.0 release
Update Changes.md
Merge branch 'pr/44'

Conflicts:
	CHANGES.md
Merge pull request #42 from ifeelgoods/topic_fixe_gemspec

Fixe gem build error ERROR: (Gem::InvalidSpecificationException)
Adds credit to mourad-ifeelgoods for pull request #42
Merge pull request #43 from ifeelgoods/topic_fixe_require

Make sure sidekiq is required
Adds credit to mourad-ifeelgoods for pull request #43
Emphasise project description in README
Update batch.rb

Add bid method to return a string batch ID to facilitate testing where a more reasonable approximation of a batch id is required
Update within_sidekiq_retries_exhausted_block.rb

Add optional message hash to mock sidekiq's passing of a message to the sidekiq_retries_exhausted_block.  This facilitates testing of interaction with the message hash and allows expectations on it.
Update batch.rb
Update rspec-sidekiq.gemspec

Fix gemspec; removed duplicated dependency
Update rspec-sidekiq.gemspec
Update rspec-sidekiq.gemspec