Add stub:withBlock: to NSObject stub category
Added method for block substitution capabilities to all NSObjects
Merge pull request #213 from tibr/stub_real_object_method_with_block

Add stub:withBlock: to NSObject stub category
Merge branch 'master' of github.com:allending/Kiwi into method-stubbing
Removed duplicate method declarations caused by simultaneous PRs
Merge pull request #214 from stepanhruda/method-stubbing

Added method for block substitution capabilities to all NSObjects
Merge branch 'master' of git://github.com/allending/Kiwi into convert-to-arc