rails/rails — pull request #8375 by steveklabnik (2012-11-29 20:26:44+00:00)
Title: Updates to the Migration Guide

I'm going to be taking a look at all of the Guides as we get closer to the Rails 4 release. I've done a bunch of work in docrails already, but with these bigger changes to the Guides, I figured that a pull request would be best.

Here are some initial thoughts on improving the Migration Guide. Most of the content changes are at the beginning. Obviously, this will probably be squashed before it's merged.

/cc @fxn @vijaydev