文字サイズを定数にした
add base scene for showing message. its not have a choise.
add notification base layer with yes/no button.
fix menu, its gather menu items to one menu.
add member method to change enable/disable selection buttons.
fix header comment.
Add interface to attach selector and to specify command type.
fix message. remove no effective code. add code to initialize member.
Merge branch 'master' into add_notice_layer
Merge pull request #10 from ichiko/add_notice_layer

メッセージ通知用のLayerを追加した