1.  Create a virtualenv in your home directory::

     $ virtualenv --no-site-packages ~/pyrenv

2. cd to the newly created virtualenv directory::

     $ cd ~/pyrenv

3. Clone ``pyr-throw`` from GitHub::

     $ git clone git://github.com/mcdonc/pyr-throw.git

4. cd to resulting ``pyr-throw`` directory::

     $ cd pyr-throw


5. Use the virtualenv's ``python`` to run the setup.py script with the
   argument ``develop``.

     $ ../bin/python setup.py develop

6.  cd back up one dir and run the app.

     $ bin/pyrapp