Add a travis.yml
Exclude dev gems from the CI environment.
Add some gemfiles so travis will test the earliest and latest supported resque versions.
rm old ci script.
Tell travis/bundler where the gemspec lives.
Fix the gemspec path.
Only use the gemfiles dir for CI.
Get CI bundles working on ruby 2.0.

resque-1.9.0 requires `json ~> 1.1.3`, and 1.1.9 of json does not build
on ruby 2.0. Therefore, the minimum resque is 1.9.1.
Don't run this on travis.
rbx :crying_cat_face:
Turn on bundler caching.
'splain the development gemfile group.
Show travis build status.
Move the travis build status.
Merge pull request #27 from spraints/travis-ci

Set up CI on travis
Merge remote-tracking branch 'origin/master' into rm-test-helpers

Conflicts:
	spec/resqued/test_case_spec.rb