Adding main classes, not tested nor compiled yet. Already created some tickets to work on. Basic implementation (without testing).
Also updated the diagram
Fixing some issues, now compiles and the Buttons are loaded correctly from a overlay panel./OgreApp
Now we have the first version of the MenuMainState working with the main substate only. We can load all the buttons from an overlay and set its configuration.
Fixing some issues.
Adding HelpState with basic information. We now support keyboard input (for example to go back pressing escape (or in this case space))