Create 'blog' rails application.

Install rails, and create the new 'blog' application.
DRY up database.yml
Set new blog home page.

Generate a new controller and view, delete the default index.html
page, and edit config/routes.rb to display new page on blog root.
Create Posts scaffold.

Run scaffolding to create Posts. Add a link to 'My Blog' on the
home page. Create, Edit, Destroy Posts all work.
Add validation to Post creation.
Create Comment model.

Generate a rails model for comments, and migrate the database.
Associate Post model to Comment
Add a Route for Comments
Generate Comments controller
Add Comment form to Posts.show
Wire comments controller create
Display comments on post page.
Merge branch 'comment_model' into develop
Extract comments display to partial.
Extract comments form to partial.
Merge branch 'refactoring' into develop
Add destroy option for comments.
Delete a post's comments when post is deleted.
Merge branch 'delete_comments' into develop
Add HTTP Basic authentication.