[SUGGESTION] Cover another example for piston (not piston_window)

[zamppe]

There seems to be a void in the examples when it comes to using piston.

If you read about piston they say conrod extends piston and that you shouldn't really use piston_window for anything serious.

If you take a look at the piston_window example in this repository you can see it is almost 2 years old and at least I can't get it to work with the latest piston_window and conrod versions.

Oddly enough there is only one piston example by piston developers that doesn't use piston_window https://github.com/PistonDevelopers/Piston-Tutorials/tree/master/sudoku This sudoku tutorial could be a basis for a conrod + piston example. Or is it even possible?

I'm not alone https://www.reddit.com/r/rust_gamedev/comments/6ru83i/warning_rant_really_confused_about_glium_glutin/

[mitchmindtree]

@zamppe thanks for opening this!

I'd be happy to see this example added if desired, but to be honest these days conrod does not really extend piston any more than it does glutin, winit, glium, gfx, etc. piston is just one backend supported by those who use it. I agree that this is a little confusing considering conrod is in the pistondevelopers org! You can read a little more about my thoughts on this here #1103.