Change install_generator.rb so other template engines could be added for Mercury layout rendering.
Create mercury.html.slim
Merge pull request #388 from sandric/master

Slim mercury layout
set railties dependency to > 3.0
Allow setting width and height on images via insert media modal
Merge pull request #414 from arjunsharma/master

Allow setting width and height on images via insert media modal
Merge branch 'master' of https://github.com/jejacks0n/mercury