azul3d_mandel: shaders in external files. See #4
azul3d_rtt: shaders in external files. See #4
azul3d_stencil: shaders in external files. See #4
azul3d_triangle: shaders in external files. See #4
azul3d_texcoords: shaders in external files. See #4
Merge pull request #6 from Seb-C/gfxv2

Moved shaders to separate files