am b4d2e42a: docs: revise menu guide to focus more on using menu resources instead of defining menus in code. And revise some style.

Merge commit 'b4d2e42a8508a09f944b13f27c043952eef6c1cc' into gingerbread

* commit 'b4d2e42a8508a09f944b13f27c043952eef6c1cc':
  docs: revise menu guide to focus more on using menu resources
tree: a780a1fdcc6f3e8b8e43c2cbd87e00c2eb6e7a42
  1. awt/
  2. camera/
  3. cmds/
  4. include/
  5. libs/
  6. opengl/
  7. vpn/
  8. MODULE_LICENSE_APACHE2
  9. NOTICE