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!

この issue は外部の 2D Physics Wrapper Class リポジトリにリンクし、matter.js のショーケースについて説明していますが、Suggestion-Box 内のファイル、テスト、エントリーポイント、具体的な変更のいずれも指定していません。検証可能な定義済みの完了条件はありません。

索引モデルが issue の本文から書いたものです。