Added  member to match existing  member
Fixed typo of 'return' for Baz::mergeBar() method
Fixed missing paren when mocking Bar object
Added editor note for using stdClass in mock
Added another editor note for using stdClass in mock
Editor note about _ in protected/private member/method names
Fixed sample code for the reflection example
Removed stray apostrophe from array call
Merge pull request #3 from dragonmantank/techedit/test-doubles

Techedit/test doubles