Fix equivalence tests for request and response descriptors.
Simplify testing for pathPattern and keyPath equality per segiddins' suggestion.
Fix equivalence test for property mappings which may also have nil string attributes in the case of relationship mappings.
Hard code AFNetworking query string serialization
Merge pull request #1973 from RestKit/feature/querystring

Hard code AFNetworking query string serialization
Bump version to v0.23.2
Fix travis badge
Fixed two typos in RKManagedObjectStore's documentation code example.
Merge pull request #1974 from pawelkw/documentation_fix

Fixed two typos in RKManagedObjectStore's documentation code example.
typo
Merge pull request #1975 from genesislive2007/patch-1

Fix a typo in RKPaginator.h
added a missed ]
Merge pull request #1976 from genesislive2007/doc/syntax-fix

added a missed ]
Merge branch 'equivalence-fix' of https://github.com/alexleigh/RestKit into alexleigh-equivalence-fix

Conflicts:
	Code/ObjectMapping/RKPropertyMapping.m
	Vendor/SOCKit
Merge branch 'alexleigh-equivalence-fix' into development
Update RKMapping.h

importing foundation to get rid of swift complier error
Remove a vestige of an older version of clang - remove &*
Merge pull request #1986 from ollieatkinson/hotfix-old-use-of-weak-self

Remove a vestige of an older version of clang - remove &*
fixes #1995
added test for https://github.com/RestKit/RestKit/issues/2000