Moving backends code from examples/ to backends/ (step 6: update markdown documentation)

backends/imgui_impl_osx.h

@@ -8,6 +8,10 @@
 // Issues:
 //  [ ] Platform: Keys are all generally very broken. Best using [event keycode] and not [event characters]..
 
+// You can copy and use unmodified imgui_impl_* files in your project. See examples/ folder for examples of using this.
+// If you are new to Dear ImGui, read documentation from the docs/ folder + read the top of imgui.cpp.
+// Read online: https://github.com/ocornut/imgui/tree/master/docs
+
 #include "imgui.h"      // IMGUI_IMPL_API
 
 @class NSEvent;