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

examples/OpenGLWindow/premake4.lua

@@ -0,0 +1,50 @@
+	
+		project "OpenGL_Window"
+	
+		language "C++"
+				
+		kind "StaticLib"
+
+		initOpenGL()
+		initGlew()
+
+		includedirs {
+		 	
+		 	"../../src",
+		}
+		
+		--links {
+		--}
+		
+		files {
+			"*.cpp",
+			"*.h",
+			"OpenGLWindow/*.c",
+			"OpenGLWindow/*.h",
+			"OpenGLWindow/GL/*.h"
+		}
+
+		if not os.is("Windows") then 
+			excludes {  
+				"Win32OpenGLWindow.cpp",
+      	"Win32OpenGLWindow.h",
+      	"Win32Window.cpp",
+      	"Win32Window.h",
+			}
+		end
+		if os.is("Linux") then
+			initX11()
+		end
+		if not os.is("Linux") then
+			excludes {
+				"X11OpenGLWindow.cpp",
+				"X11OpenGLWindows.h"
+			}
+		end
+		if os.is("MacOSX") then
+			files
+			{
+					"../OpenGLWindow/MacOpenGLWindow.h",
+					"../OpenGLWindow/MacOpenGLWindow.mm",
+			} 
+		end