Memes – cats relationship fixed
Rename Meme#picture to #image

For consistency with cats.
Most basic MemeUploader
Regenerate meme from cat when saved
Memes#preview is now a GET action

Returns image file.
Proper meme uploader which inserts text
Assigning text to memes
Regenerate meme only when needed
Meme show page fixed
Randomize file name for generated memes

Contrary to model's id, available for new records too.
Facebook like button
Cleanup unused fixture
Manage meta tags with meta-tags gem
Set OpenGraph metadata for meme page