documentation: step by step tutorial

[galaxyjim]

install python 3.4
install pyglet
install PyWidget3

import pyglet
create pyglet window
create widgets
create a main widget (... could be a hbox or vbox or dialog....)
add main widget to pyglet draw code
add main widget to pylet event handlers

only one event handler per opengl/os window )
otherwise overlapping windows will not work correctly.