Fixes to DerelictBgfx to be in sync with bgfx Nov 6, 2014 commit titled "Added .editorconfig."

- update cube example shaders
- update metaballs embedded shaders
- specify sync explicitly in this commit readme.md
Merge pull request #8 from ohenley/master

Fixes to DerelictBgfx to be in sync with bgfx Nov 6, 2014 commit titled ...