Updating test suite to latest dependencies

multi_json and active* are not updated in this commit
Update Rakefile to match `bundle gem`
Ignoring .bundle and bin (bundler binstubs)
Update remote_spec metadata handling
Fix name collisions with multiple spec_helpers
Enable/Disable FakeResource
Ignore .ruby-version
Ignore PF::Component specs, which are incompatible with FakeResource

These specs will be re-introduced in 0.6.0, when
https://github.com/chargify/chargify_api_ares/pull/61 is pulled in
and the minimum ActiveSupport version will be bumped to 3.0
Add expanded compatibility notes
Merge remote-tracking branch 'aceofsales/update-test-suite' into 0-6-stable

Conflicts:
	.gitignore
Minimum ActiveResource now 3.0; XML Serialization patched

With this commit, the minimum Rails/ActiveResource version is now
set to 3.0.  Versions between 3.0.0 and 3.0.19 will have their
ActiveModel XML serialization patched according to
https://github.com/rails/rails/pull/8853 since Chargify will no longer
allow XML with `type="yaml"` parameters.  See the Readme for more
information.
Bump version to 0.6.0
Rollback to FactoryGirl 2.6 to regain ruby 1.8 compatibility
updated documentation, added regression spec for improper cc on subscription, and updated configuration api
Merge pull request #62 from chargify/update-confiuration

updated documentation, added regression spec for improper cc on subscripription
Update README.md