Bump to CocoaPods 0.21.0
Update testing dependencies
Fix deprecation warnings from update to latest OCHamcrest
Use bit maskabled values for the RKRequestMethod enum
Use the prefered syntax with the NS_OPTIONS macro to define enum
Force the request method to be an exact match on route creation
Introduce RKRequestMethodAny in the RKRequestMethodAny enum

and clean up declarations of RKRequestMethodAny in other classes
Refactor the RKIsAnExactRequestMethodMatch static function

and do not consider RKRequestMethodANY as an exact method
Let routeWithClass: and routeWithRelationshipName: use bit mask methods
Refactoring and documentation cleanup
Complete integration of bit mask support for routing
Merge branch 'dulaccc-prepare-support-for-bitmasks-methods' into development
Add tests and support for using bitwise specifiers for `enqueuedObjectRequestOperationsWithMethod:matchingPathPattern:` refs #1476
Add `prefix_header_contents` to suppress System Configuration and Core Services warnings when building under CocoaPods 0.21
Export `RKStringDescribingRequestMethod` so that it can be used outside of RKRoute.m
Add `method` to relationship route stubbing
Add Apache License boilerplate to Testing.h
Bump Ruby dependencies