Python 2 and Python 3 compaitablity

[ylogx]

This is more or less to ensure pip2 install and pip3 install work seamlessly.
Right now universal may or may not work when installed using pip2 (in python2/site-packages).

Steps to reproduce:

• Uninstall current universal installation using pip3 uninstall universal
• Install using pip2 install universal
• Ensure universal hello.c doesn't throw any error and print function works correctly