add runserver.py script with host & port args
    
    This changes the way you run a dev server, with the
    addition of runserver.py in the root dir of the project.
    
    runserver.py now also has two arguments port and host
    allowing the developer to choose the port and host that
    their dev instance is running on.
    
    The Readme is also updated adding the new way to start
    the devserver, and also removing a few trailing white
    spaces