v0.80 - Additional graphics options

Hey Everyone,

I've added additional graphics options to options menu and added controls menu item, that describes controls for keyboard and gamepad.

Version 0.80 Changelog:

• Added ability to set Texture Quality.

• Added ability to set Anisotropic Filtering.

• Added option to turn on/off Vertical Synchronization.

• Options menu, now shows current anti aliasing level.

• Added description of keyboard controls scheme. (not localized)

• Controls related options and information moved to controls menu.

• Anti-Aliasing for Maximum quality setting increased to 8x.