Orchestra\Foundation\Installation\Installer test cases. Closes #8

- some testcases for Orchestra\Foundation\Installation\Installer
- Test cases for Orchestra\Model\User
- Minor tweaks.
- Finish testcases for Orchestra\Foundation\Installation\Installer

Signed-off-by: crynobone <crynobone@gmail.com>
Update branch alias.

Signed-off-by: crynobone <crynobone@gmail.com>
Merge branch '2.0'