Add Knighty's demo

This release adds the beautiful demo scenes from knightyFF@github.com

Add Fragmentarium code for 2d circle packing, and update shadertoy demo

0.0.4

Update README.md

Update the Ball packing code to use Knighty's efficient version

0.0.3

merge Knighty's code into the upper half spaces examples

A more complete version

A more complete version

First release, mainly for archive purpose.

First release, high quality but quite slow. And some rendering parameters are set in a bad way.