Identify ruby code for syntax highlighting

Fixes #617
Merge pull request #619 from vanstee/ruby_file_doc_strings

Identify ruby code for syntax highlighting
Generated specs support module namespacing (e.g., in a Rails engine)

* Fixes #448
add CAPYBARA.md
prep for 2.11.1
need to add Capybara.md to .yardopts
one more rename
better capy integration docs
tweak capy integration docs
gotta add files to gemspec too
OMG, DRY violations in docs - prep for 2.11.4
Fix bare #render in view specs on Rails 3.1

656ff3 made this compatible with 3.2 by splitting the
name of the template in the description into its base
name, locale, format and handler components, but in
doing so broke compatibility with 3.1 and earlier,
which does not support the extra options.
Merge pull request #624 from jfirebaugh/render_3.1

Fix bare #render in view specs on Rails 3.1
Changelog for #624 [ci skip]
Removes AutoTest config/ exception

* Mappings for files under config/ will work
* Fixes #625
* Closes 627
Adds custom failure messages for #be_new_record matcher

* Fixes #628
A first stab of fixing `assert_template` in Rails 4 view specs

* It's relatively unobtrustive, but feels quite dirty. I'm hoping this
  is a temporary fix that produces feedback on something better.
Capybara feature specs may use Rails URL helpers
Documents how to customize `rake spec`

* Closes #521
Fix link to Capybara.md on rubydoc.info

reflect rename