method should first be invoked on CollectionProxy

This is fix for https://github.com/rails/rails/issues/9994
Use the correct gemspec so SQLite3 gets pulled in with bundle install
Merge pull request #8 from codeodor/fix-gemspec-for-edge-rails

Use the correct gemspec so SQLite3 gets pulled in with bundle install
Merge pull request #7 from neerajdotname/9994

method should first be invoked on CollectionProxy