Adding brew directory and requirements file.
Adding cask directory and requirements file.
Adding node directory and requirements file.
Adding tails script to create a bootable USB drive running Tails.
Adding refind script to install rEFInd boot manager.
Adding python script to create a new pristine python virtual env.
Fix for app_exists function.  Also adding function to suppress all output.
Skipping venv creation if pymordial venv already exists.
Updating docs to reflect some new functionality.