add initial examples, replacing the 'Demos/Demos3'. Will make it work cross-platform, OpenGL3/OpenGL2 and add more examples to it.

examples/OpenGLWindow/Shaders/createShadowMapInstancingPS.h

@@ -0,0 +1,10 @@
+//this file is autogenerated using stringify.bat (premake --stringify) in the build folder of this project
+static const char* createShadowMapInstancingFragmentShader= \
+"#version 330\n"
+"precision highp float;\n"
+"layout(location = 0) out float fragmentdepth;\n"
+"void main(void)\n"
+"{\n"
+"	fragmentdepth = gl_FragCoord.z;\n"
+"}\n"
+;