Include 'acts-as-taggable-on' gem
rails g acts_as_taggable_on:migration && rake db:migrate
Adds 'acts_as_taggable' to Post model
Add text field on new/edit post form to set tags
Add tests to ensure that updating a post works and fix it since it wasn't working before
Consistent use of 'posts_path_with_slug'
Include 'factory_girl' gem
Change 'factory_girl' to 'factory_girl_rails'; run bundle update
Add .rails_generators~ file to .gitignore
Switch from using fixtures to using factories
Include list of tags with a post
Apply styling to list of tags for posts
Don't try to show list of tags for posts that don't have any
Make tags in list link to a page for viewing posts with that tag
Add ability to show posts that have a given tag
List tags in the order they were given