3.6.7

• Added '*.rvz' extension for 'wii' and 'gc' platforms (Thank you to user 'tcamargo' for reporting this)
• Added '*.chd' extension for '3do' platform (Thank you to user 'Roudaku' for reporting this)
• Added 'openbor' platform. Exists in RetroPie as experimental platform (as requested by user 'hahnmt')
• 'neogeo' platform now uses 'box-2D' as cover instead of 'flyer' when scraping with the ScreenScraper module (Thank you to user 'retro81' for suggesting this)