Remove deprecation errors
Remove retinajs
Delete manifest
Only save retina optimized version for carrierwave strategy
Replace image_tag with retina_image_tag. One which set's width an height on an image instead of a high res source attribute
Update sqlite3 file to match new data structure
Bump version
Support Rails 4
Only support Rails 4 for ruby 1.9.3 and above
Remove unused asset configuration
Better readable code
Better readable comments in carrierwave spec
Update travis matrix
Add Paperclip logic
Make sure tests pass on Travis
Refactor code and make sure Paperclip specs pass with newest version of Paperclip
Add CarrierWave logic for conditional versions (#45)
Merge branch 'refs/heads/master' into 2.0.0

Conflicts:
	lib/retina_rails/strategies/carrierwave.rb
	lib/retina_rails/version.rb
	spec/strategies/carrierwave_spec.rb
	spec/strategies/paperclip_spec.rb
	spec/support/file_string_io.rb
	vendor/assets/javascripts/retina.js
Update README.md [ci skip]
Update ruby versions in README.md [ci skip]