Installation script selects for Python3's pip instead of Python2's pip2

[Mikerah]

I have both Python 2 and Python 3 installed on my Fedora 27 installation. However, by default it seems like the install script runs with the python3 command instead of the python2 command.

In the install.sh script, on line 59, it checks if pip is installed on the system. However, since I have both version of python installed, by default, pip refers to the Python 3 installation whereas pip2 refers to the Python2 installation. I commented out that line. However, that shouldn't be a fix for the users of this script.