Add Cells to dependency
Use Draper instead of Cells
Format markup
Generate Snippet- and MessageDecorator
Define SnippetDecorator
Decorate Snippet objects
Generate UserDecorator
Associate UserDecorator to SnippetDecorator
Move helper for GitHub URI of a user from helper to decorator
Add test for UserDecorator
[REFACTORING]Use constant for URI stem
Merge branch 'master' into transition-page
Stub username
Insert space
Define MessageDecorator#content
Format MessageDecorator#content
Add test for message including image URI
[REFACTORING]Use constant for Regexp of images
Format MessageDecorator#content
Generate TransitionController