Using matter.js -- a Wrapper Class for ease of use

[2D Physics Wrapper Class repository](https://github.com/RedHenDev/RedHen_2DPhysics)

For those interested in using Liam Brummit's brilliant [matter.js](http://brm.io/matter-js/index.html), the above 'wrapper' allows you to set things up, including removing lost bodies, mouse/touch interaction, texturing bodies, and detecting collision events, with very few lines of code.

So, you can have realistic 2D Physics and interaction working in your artwork/simulation/game very quickly. Eg. [No Man's Flappycraft](http://www.redhendev.com/NoMansFlappyCraft)


The code for the wrapper follows from where Dan Sheeeefmahn left off in his matter.js tutorial series.

P.s. I learned A LOT about ES6 classes and inheritance through coding this wrapper :) -- I'd recommend coding a similar thing yourself if wanting to learn!

Das Issue verweist auf ein externes Repository namens 2D Physics Wrapper Class und beschreibt eine matter.js-Demo, nennt aber keine Datei, keinen Test, keinen Einstiegspunkt und keine konkrete Änderung in Suggestion-Box. Es gibt keine definierte Abschlussbedingung, die überprüft werden kann.

Vom Indexierungsmodell aus dem Issue-Text verfasst.