Updated the section on documentation.
Added a refactor note.
Missed an 'a'.
Merge pull request #3 from xiongbo/rails-3-2

Create readme.zh_cn.md
Added a note about self documenting code.
Merge branch 'rails-3-2' of github.com:hopsoft/rails_standards into rails-3-2
Formatting for the documentation section.
Formatting under the gems section for better readability.
update to the latest version