support resizing.

js/pixl/public/trixl.html

@@ -310,6 +310,14 @@
				}
			}
		});
		window.onresize = function() {
			trixl.window.w = window.innerWidth;
			trixl.window.h = window.innerHeight;
			trixl.stage.width = trixl.window.w;
			trixl.stage.height = trixl.window.h;
			gl.viewport(0, 0, trixl.window.w, trixl.window.h);
		}
	</script>
</body>
</html>