Consistently prefer single quotes over double quotes
Minor syntax/cleanup
Setup Bundler when running tests
Alphabetize Gemfile
It's 2013
Bundler & Rake are dev dependencies
Update gemspec
Convert README to Markdown
Prefer HTTPS links
Less shouty headers
More descriptive license info in readme
Update Bundler Rake task loading
Use RSpec's built-in Rake task
Remove obsolete autotest configuration
Require ActiveRecord >= 3.0 to reflect readme and test suite
Add me as an owner
No need for custom Travis script configuration anymore
Freeze WithModel::VERSION
Replace deprecated autoload with regular requires
instance_exec over instance_eval

There's no difference here, but this is "closer" to what we want.