Make usage of NSArray literals a little bit simpler in equal()

This allows to write something like expect(array).to.equal(@[ @"a", @"b", @"c" ]) without additional parentheses around the array literal.
Add code completion helper for beIdenticalTo()

Like for equal() this helps discovering the matcher using code completion in Xcode.
Merge pull request #61 from frenetisch-applaudierend/patch-2

Add code completion helper for beIdenticalTo()
Fix indentation
Merge pull request #59 from frenetisch-applaudierend/patch-1

Make usage of NSArray literals a little bit simpler in equal()
Add causeNotification matcher & tests. assertFail tests are failing though, not sure why.
Comment out failing tests. Need to get some help identifying why these tests are failing (all assertFails are failing)
Add removeObserver
Rename causeNotification to notify
Support using NSNotification as well as NSString name
Add new notify matcher information.
Fixed broken assertFail tests. Could still improve message returned when wrong notification received.
Improve error message, add unit tests for missing nil cases.
Add will.notify test, but it is failing.
Fixed async notification handling.
Handle case where object passed but not an NSNotification
Reindent to 2 spaces per contribution guidelines
Minor cleanup, remove redundant error check.
Fix missing double-quote typo
Add to both targets. Was iOS only previously