added specs for Mock
finished specs for Spec.Util
fixed Test specs
added pending specs for DSL
added tests for Report
tests for DelayedExpectation class methods
started writing tests for matchers and refactor a bit
Refactored #shouldReceive and #shouldNotReceive

Now proxies to expect().toReceive and expect().notToReceive.

Also refactored how method stubs are created, which as a side effect
required changing the behaviour of Spec.Util.extend to prevent it from
overwriting MethodStub.stub
Merge branch 'more-specs'

Conflicts:
	Gemfile.lock