Better debugging tools
Add pry-rescue
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
Demonstrate routing syntax
Manually setup resource routes
Roll back to using the resources helper
Add member route to posts resource
Add collection route to posts resource
Demonstrate except
Demonstrate nested resources