Tell students what the Rails app should look like
Remove extra link to Rails Architecture page.

This read as if people MUST go on to the Rails Architecture page, but it's very
much optional.
Explain what's in the migration file

This explanation is taken word-for-word from the main Railsbridge documentation.
Minor formatting on CRUD with Scaffolding page

Double quotes, capitalization, etc.
We know students are using Rails 4
Capitalize "Rails" when it refers to the framework
Tell people to sign up for Heroku before deploying
Spell out "console" for students
Use code formatting
Tell people how to quit `rails console`
Students don't care about restarting the server

Having to restart the server is a pain for professional software developers, but
students have little exposure to these kinds of problems. They probably aren't
thinking about that at all, so let's just not mention it.

This also removes the word "Hawt", which could be taken the wrong way.
Remove stray quote
Encourage spelling out variable names

Change `msg` to `message`.
Un-nest list items

The indentation meant that the three bullets after the first were nested under
the first bullet. Now they're all at the same level.
Encourage using path helpers like `topic_path`

Students can connect `topic_path` to the output from `rake routes`, but
probably can't do so with just `topic`.
Fix grammar collision

"By doing the following" should be followed by words that also end in "-ing",
not present-tense words.
Remove the word "spanking" from the curriculum
Use double quotes for quoting in prose
Whitespace
Add extra credit CSS from old curriculum