Rails 4 compatibility
Update readme to mention tested against  Ruby 2.0.0
Looser gem version, support 1.9.3 and 2.0.0
Merge pull request #30 from bousquet/rails4

Rails4 compatibility
Prevent overwriting of Rakefile, append instead
Version bump
Merge pull request #31 from bousquet/rails4

Rails4
Create Rakefile if it doesn't exist
Relax gem versions

We started out with this meta-gem strictly setting the versions
down to the tiny version. In practice, this means there are lots
of updates needed to keep the gem viable. This assumes that these
gem authors are following semver conventions. Easier to come back
and lock down a specific gem if we find an issue.
Merge pull request #33 from newleaders/rails4

Better compatibility with Rails 4