Moonflow Lensflare System Versions Save

I have reduced the total code of MFLensflare.cs, in order to avoid memory leaks and make less GC on the same time. It's really a fatal bug. And now gc will only caused when some light sources are disabled or MFLensflare be destroyed Now you can enjoy this plugin more convinient. And I have uploaded a single example scene together. You can have a look to find how to use the plugin directly.

fixed some bug

1. Change the algorithm of occlusion determination
2. Change the way to make flare piece
3. Now light color can be mixed with a balanced value between 0-1
4. Add a shader example to support new feature

0.0.2 version is unfinished, copy file may cause some problem to your project. Please download here for 0.0.1 version

0.0.1 version with a simple example scene. The example flare atlas are imported from 'Standard Assets' package from Unity.