Prepare Ubuntu for the Python authentication library

Before installing the Python authentication library on Ubuntu, Veracode recommends that you run these commands to prepare the system:

1. To uninstall any system-installed version of pip, run:

   sudo apt-get remove python-pip

2. To install the latest version of pip, run:

   sudo easy_install pip

3. To uninstall any system-installed version of HTTPie, run:

   sudo apt-get purge httpie