Added tests for stubbing __get() method.
Revert "Merge pull request #79 from RickWong/master"

This reverts commit 986c83b2d53458ae7e4fab2b81cac6a3766da259, reversing
changes made to 9de7d1a900891e41d657144931c13f7f5fa04bb4.
Revert "Merge pull request #77 from RickWong/master"

This reverts commit 9de7d1a900891e41d657144931c13f7f5fa04bb4, reversing
changes made to 047a12475e3319c5decf291bb737e6c4fd042751.