Examples: Titles/comments in headers

examples/imgui_impl_win32.h

@@ -1,3 +1,5 @@
+// ImGui Platform Binding for: Windows (standard windows API for 32 and 64 bits applications)
+// This needs to be used along with a Renderer (e.g. DirectX11, OpenGL3, Vulkan..)
 
 IMGUI_API bool        ImGui_ImplWin32_Init(void* hwnd);
 IMGUI_API void        ImGui_ImplWin32_Shutdown();