PixiJS Library (#27412)

* PixiJS library

* missing extension

* Rename guide/english/canvas/PixiJS.md to guide/english/canvas/pixi-js/index.md

* fix: added frontmatter

guide/english/canvas/pixi-js/index.md

@@ -0,0 +1,42 @@
+---
+title: PixiJS
+---
+
+## PixiJS
+
+# Introduction
+
+Pixi.js is an open source, cross browser JavaScript 2D WebGL graphics library with canvas fallback.
+
+# Example 1
+
+The rotating bunny
+
+```
+var app = new PIXI.Application(800, 600, {backgroundColor : 0x1099bb});
+document.body.appendChild(app.view);
+
+// create a new Sprite from an image path
+var bunny = PIXI.Sprite.fromImage('required/assets/basics/bunny.png')
+
+// center the sprite's anchor point
+bunny.anchor.set(0.5);
+
+// move the sprite to the center of the screen
+bunny.x = app.screen.width / 2;
+bunny.y = app.screen.height / 2;
+
+app.stage.addChild(bunny);
+
+// Listen for animate update
+app.ticker.add(function(delta) {
+    // just for fun, let's rotate mr rabbit a little
+    // delta is 1 if running at 100% performance
+    // creates frame-independent transformation
+    bunny.rotation += 0.1 * delta;
+});
+
+```
+
+
+You can find this running example here: http://pixijs.io/examples/index.html#/basics/basic.js