Add collection support for NSHashTable
Add test for NSHashTable+RACSupport
Add collection support for NSMapTable
Add test for NSMapTable+RACSupport
Add NSHashTable and NSMapTable support to ReactiveCocoa.h
Rename signals in NSMapTable+RACSupport
Change the iOS deployment target to 6.0
Use +weakToWeakObjectsMapTable for testing under ARC

+mapTableWithWeakToWeakObjects is deprecated in OS X v10.8, and the objects created using the method don’t support weak references under ARC.
Add tests and documentation for whether the signals retains the objects in the collection
Fix NSMapTable+RACSupport not to retain the keys and values in the collection
Refactor NSMapTable+RACSupport using -rac_signal and -reduceEach:
Merge branch '3.0-development' into collection-support-hashtable-maptable

Conflicts:
	ReactiveCocoaFramework/ReactiveCocoa.xcodeproj/project.pbxproj
	ReactiveCocoaFramework/ReactiveCocoa/ReactiveCocoa.h
	ReactiveCocoaFramework/ReactiveCocoaTests/RACCollectionSupportSpec.m
Fix documentation
Fix missing merge
Update README to reflect iOS deployment target change
Remove unnecessary import
Some style fixes
Test that signals send the new entry in `@autoreleasepool` block
Disable ARC for GCD objects (on iOS)
Merge pull request #1030