Issue 176: on_resize documentation.
Issue 176: on_resize documentation.

oktayacikalin/pyglet,mammadori/pyglet,oktayacikalin/pyglet,theblacklion/pyglet,oktayacikalin/pyglet,mammadori/pyglet,theblacklion/pyglet,oktayacikalin/pyglet,oktayacikalin/pyglet,theblacklion/pyglet,mammadori/pyglet,theblacklion/pyglet,mammadori/pyglet,theblacklion/pyglet