Adapt demo to WebGL (GLES 3)

[Maeiky]

Adapt demos to the WebGL app, try it out here: WebGL demo

[slembcke]

Hay! That's sweet! (CWeet?)

It looks like the Cwc tools are Windows only? Not a problem, but I'd probably change some of the README.md edits. Also, are the binary files supposed to be in the cwc directory? I'm fairly opposed to including build binaries as they make for a maintenance nightmare later on.

[Maeiky]

Hello, sorry, I didn't expect github to add my extra commits. The initial commit for the PR was to modify the demo file "demo/ChipmunkDebugDraw.c" & "demo/ChipmunkDemoTextSupport.c".
The others only to show the result.

I use my home made compiler to build it, so feel free to take only what you want. Prebuild binaries lib, is probably a bad idea, Cwc make it so easy to build anyway (literally just double click) so it's not a problem ^^.

So yes, it's Windows only, I had planned to make a port, and add the possibility to build same binaries with the exact same makefile using XE-Loader (true portable toolchain) but I need more time to do it.

[slembcke]

Ok, so you meant to just include f9f5063? I can cherry pick that easily enough.

[Maeiky]

Great, I'll do another PR if I manage to create a true cross-platform compiler/makefiles ;)