This project has both a stable and master branch. Most users should use the stable branch which should be more stable than the master branch which may contain code that is work-in-progress. It should be noted that both branches are still considered alpha and some features are not fully function and everything is subject to change.
The source code is available in a GitHub repository here
$ cd ~/src/
$ git clone https://github.com/paul-h/mythfrontend_qml.git
$ make -j4
$ sudo make install
You should now take a look at the post install hints and tips here