Add usage instructions
Add users and comments table

Commands:
* rake db:create
* rails g migration CreateUsers name:string
* rails g migration CreateComments body:text user:references
* rake db:migrate
Add title field to comments

Commands:
* rake db:rollback
* rake db:migrate
Generate User and Comment model

Commands:
* rails g model user --skip-migration
* rails g model comment user:references post:references --skip-migration
Provide seeds

Commands:
* rake db:seed
Improve seed to be idempotent

Now seeds can be invoked repeatedly. Only changes are applied.

Commands
* rake db:seed
Generate comments controller

Commands:
* rails g controller comments index show
Add page resource

Commands:
* rails g resource page title body:text
* rake db:migrate
Scaffold pages

Commands:
* rails g scaffold page title body:text
Revert "Generate comments controller"

This reverts commit 7be982d74c84bf2153db63e05541d5c1749f0122.

Conflicts:
	config/routes.rb
Generate comment resource in blog namespace

Commands:
* rails g resource blog/comment --no-migration
Move posts to blog namespace
Add gems useful for testing
Generate rspec configuration

Commands
* rails g rspec:install
Customize rspec configuration

Show doc format and disable warnings.
Disable fixtures
Remove test/
Add very simple smoke test

Use Capybara to drive a simulated browser.
Add another test
Expect existence of posts in listing