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Commit gemfile.lock
Remove unsued mixins and add CSS transition mixin
Add placeholder mixin
Add transistion as parameter for css transitioon mixin
Add vertical align mixin
Use slim for application.html
Use anotehr retina replacement mixin
Implement imretina image replacement technique in home index
Add fake image to test new image-2x partial
Rename example.sass
Change order in gemfile
Cleaning
Use max width for breakpoint
Delete unsued home.js file