Ruby 2.0 and activesupport/core_ext.
Fix .gitignore (need Gemfile.lock and Procfile for foreman and Heroku).
Replace self.parameterize by to_query (available in active_support/core_ext).
Commit Gemfile.lock to share with everyone on the project (and Heroku instances).
Fix typos.
Fix typos in min.'s too (and auto remove trailing whitespaces).