Add Pixel Composer (#283)

Node VFX editor for pixel art

README.md

@@ -129,6 +129,7 @@ _Great graphics placeholders and tools to turn that squared game into a picasso
 - :tada: [DragonBones](http://dragonbones.com) - The Open Source 2D skeleton animation solution for Flash
 - :tada: [LWF](http://gree.github.io/lwf/) - Lightweight SWF. LWF is an animation engine which can play animation data converted from FLASH contents in HTML5, Unity, Cocos2d-x, iOS UIKit, and more.
 - :moneybag: [Mixamo](https://www.mixamo.com/#/) - tool for auto auto rigging and animation of 3D humanoid models,
+- :tada: [Pixel Composer](https://github.com/Ttanasart-pt/Pixel-Composer) - Powerful node-based VFX editor for pixel art
 
 #### Vector/Image Editor