Toward being a plugin, made this a Rails 3.0.9 application; ran bundle install.
Test '+' method.
First test passed (method '+').
Test class, CssString.
Copy HTML from gallery; fix Rake:DSL uninitialized constant.
Correct permissions.
Ran rails generate controller Simplest.
Add simplest route.
Copy page partials from gallery.
Show pictures.
Change to raw html; show actual pictures.
Clean up.
Improve tests; add constants.
Add TestBed to app name prior to plugin.
Add MIT license.
Add websites etc. to README.
Toward a plugin test.
In README, use Markdown.
Fix license reference Markdown syntax.
Improve README.