Add tests for update_all SQLi
Check for SQLi in ActiveRecord::Relation#update_all

http://api.rubyonrails.org/classes/ActiveRecord/Relation.html#method-i-update_all
Merge pull request #253 from presidentbeef/check_for_update_all

Check for ActiveRecord::Relation#update all
Rename duplicate test methods
Remove double spacing in generated tests
Minor code cleanups
Add file to YAML parsing warning
Merge remote-tracking branch 'upstream/master'