Added redis_namespace configuration option
Use secure URL for rubygems
Allow rubinius build fail
Added ruby 2.0 build in travis
Updated gem requirements
Updated gemspec.
Projects using batsir can now set their own constraints on which sidekiq gem version to use
Merge branch 'staging'

Conflicts:
	batsir.gemspec
Version incremented to 0.3.5
NOTICE: This version removes sidekiq/celluloid gem contraints. Be sure to set these accordingly in your own project's Gemfile!