Updated Home (markdown)
Created appendix 1 rtl sdr gpio (markdown)
Updated acknowledgments (markdown)
Updated software configuration (markdown)
Updated installation (markdown)
Updated usb controller replacement (markdown)
Updated building the board (markdown)
Updated advantages (markdown)
Updated technical description (markdown)
Updated project overview (markdown)
Changed image url
Added selected SDR dongle
Corrected BOM URL - Thanks ly2bvb