Added XML comments to the three main classes in the Engine
Added /doc compiling to Robotshootans project to output the documentation

Signed-off-by: BunnyRabbit2 (Lewis Storey) <iamlewisstorey@yahoo.com>
Changed SplashScreen and SplashLogo to have changable display times
No more magic numbers! :D

Signed-off-by: BunnyRabbit2 (Lewis Storey) <iamlewisstorey@yahoo.com>
Added XML comments to all public stuff
Changed last few references to componenets to entities

Signed-off-by: BunnyRabbit2 (Lewis Storey) <iamlewisstorey@yahoo.com>