-[RKPaginator cancel] invalidates objectRequestOperation.
Switch to rbenv from rvm.

* Remove ruby- prefix in .ruby-version
* Delete .ruby-gemset
Add Bundler config file and bin directory to .gitignore
DRY up version configuration in Podspec
Enables installation of Network and ObjectMapping sub-specs via CocoaPods without requiring Core Data
Add missing conditional compilation to the testing classes for use standalone from Core Data
Quiet down `AFHTTPClient` warnings when importing the Testing subspec
Fix issues with request descriptor matching and add battery of explicit tests for descriptor precedence lookup. closes #1513
Fix issues with request descriptor matching and add battery of explicit tests for descriptor precedence lookup. closes #1513
Fix RKResponseMapperOperation matchingResponseDescriptors to check for method match
Merge pull request #1517 from segiddins/bugfix/responsemapperoperation-matchingresponsedescriptor

Fix RKResponseMapperOperation matchingResponseDescriptors to check for method match
Remove import of RestKit.h from RKOperationStateMachine.h
Remove explicit `bundle install` since Travis now prioritizes Bundler ahead of CocoaPods (see travis-ci/travis-ci#1276)
Enable support for mapping values in @metadata as relationships. fixes #1506
adding new ObjectManager methods for building RKObjectRequestOperation objects that take an array of response descriptors.  Updated appropriateObjectRequestOperationWithObject:method:path:parameters: to pass only the response descriptors that match the object, path, and method passed in.
Add test coverage for RKObjectResponseMapperOperation's HTTP method-based matching (refs #1510)

The test checks to make sure RKObjectResponseMapperOperation filters the
provided response descriptors based on the HTTP method (and not just by
URL and status code).
Merge pull request #1502 from shsteven/development

-[RKPaginator cancel] should nil out objectRequestOperation
Support for responses with no Content-Type where appropriate
Simplify testing route for no content tests using `Sintra::MultiRoute` from sinatra-contrib. refs #1535
Alias Prefixed Names for RKAssignmentPolicy