Add code coverage for CodeClimate builds
Specify new rake
Generate binstubs for rspec and rake

[ci skip]
Fix CodeClimate coverage token
Remove binstubs

Because we list the files to package in this Gem by shelling out to Git,
including all files that are in Git, we want to exclude our binstubs. If
we don't those binstubs get packaged with our gem, and so if you install
the gem, our binstubs end up on your PATH. OOPS!

An alternative would be to change how we list the "files" in our
.gemspec to make sure our binstubs are excluded. Maybe later...
Remove unnecessary require of Set.
Add specific Rubinius versions to Travis
Merge pull request #7 from phiggins/remove-require-set

Remove unnecessary require of Set.
Do not undefine :object_id
Fix specs
Merge pull request #8 from bmxpert1/master

Fixes #1.
Merge remote-tracking branch 'stevenharman/master'

Conflicts:
	lib/dumb_delegator.rb

Merge my reflective features with recent public changes.
Replace duplicate 'delegates ==' specification with 'delegates ==='.