Translate the slides to english and make it the default language.

Signed-off-by: Gianni Valdambrini <aleister@develer.com>
Added two command line options to make the application fullscreen
or to select the language. Changed also the default language which is
now English.

Signed-off-by: Gianni Valdambrini <aleister@develer.com>
Made a couple of slides more adaptive for different resolutions.

Signed-off-by: Gianni Valdambrini <aleister@develer.com>
Added a README

Signed-off-by: Gianni Valdambrini <aleister@develer.com>