Updated index.md
Renamed test mocks, deleted obsolete ones
Added new ``Zepto\Console\Zep`` object
Moved most of the logic from ``zep`` into ``Zepto\Console\Zep``
Updated ``Zepto\Console\Zep`` and added test class
Updated TODO.md
Moved some logic back into ``zep`` to keep ``Zepto\Console\Zep`` testable
Updated ``Zepto\Console\Zep``, its' test class and the ``zep`` utility
Merge branch 'feature/update-zep-tool' into develop