More unit tests

* :star: New require-dev dependency `mikey179/vfsStream` for unit tests
* :star: New Configuration method `Configuration::getDetailsMap(...)`
* :pencil: Modified `StatusCommand` to use the Configuration's details map
* :star:  New Unit Test `StatusCommandTest`
* :star: New Unit Test `GenerateCommandTest`
Can you please remove "Doctrine" from the name