Add a fiddle for the mandelbrot example, fixes AssemblyScript#109

Author: dcodeIO

README.md

@@ -60,7 +60,7 @@ Examples
 * **[Conway's Game of Life](./examples/game-of-life)** [ [demo](https://rawgit.com/AssemblyScript/assemblyscript/master/examples/game-of-life/index.html) | [fiddle](https://webassembly.studio/?f=gvuw4enb3qk) ]<br />
   Continuously updates the cellular automaton and visualizes its state on a canvas.
 
-* **[Mandelbrot Set](./examples/mandelbrot)** [ [demo](https://rawgit.com/AssemblyScript/assemblyscript/master/examples/mandelbrot/index.html) ]<br />
+* **[Mandelbrot Set](./examples/mandelbrot)** [ [demo](https://rawgit.com/AssemblyScript/assemblyscript/master/examples/mandelbrot/index.html) | [fiddle](https://webassembly.studio/?f=pne1undq5g) ]<br />
   Renders the Mandelbrot set to a canvas.
 
 * **[i64 polyfill](./examples/i64-polyfill)**<br />