Added Matcaps and ecs-lib libraries (#207)

Matcaps - A wide variety of Matcaps textures
ecs-lib - An Entity Component System (ECS) library in typescript

README.md

@@ -69,6 +69,7 @@ Graphics
 * :free: [Iconmonstr](http://iconmonstr.com/) - Another free icons resource for your games.
 * :money_with_wings: [Kenney Assets](http://kenney.nl/assets) - Royalty free assets
 * :free: [Liberated Pixel Cup assets](http://lpc.opengameart.org) - Free graphic assets of the Liberated Pixel Cup (LPC) held by the OpenGameArt forums
+* :free: [Matcaps](https://github.com/nidorx/matcaps#matcaps) - A Huge library of matcap textures in PNG and ZMT, organized by color.
 * :free: [OpenClipart](https://openclipart.org/) -  Collection of free cliparts.
 * :free: [OpenGameArt](http://opengameart.org/) -  a media repository intended for use with free software game projects.
 * :moneybag: [Oryx Design Lab](http://oryxdesignlab.com/) - Cheap high quality royalty free sprites
@@ -225,6 +226,7 @@ Code
 * :tada: [ENGi](https://github.com/ajhager/engi) - A multi-platform 2D game library for Go.
 * :tada: [engo](https://engoengine.github.io/) - Engo is an open-source 2D game engine written in Go.
 * :tada: [Ebiten](https://ebiten.org/) - A dead simple 2D game library in Go.
+* :tada: [ecs-lib](https://github.com/nidorx/ecs-lib#readme) - **ecs-lib** is a tiny and easy to use ECS (Entity Component System) library for game programming. It's written in Typescript but you can use on node.js and web browser too.
 * :tada: [Ejecta](http://impactjs.com/ejecta) - A Fast, Open Source JavaScript, Canvas & Audio Implementation for iOS.
 * :tada: [EnchantJS](http://enchantjs.com/) - A simple JavaScript framework for creating games and apps.
 * :tada: [EnTT](https://github.com/skypjack/entt) - Gaming meets modern C++, a fast and reliable entity-component system (ECS) and much more