beef-board firmware upgrade utility

1. Run drivers/install_all_drivers.bat
2. Place your fw file in the same directory as beef-tool.exe
3. Make sure your fw file is named beef.hex
4. Run beef-tool.exe
5. Put beef-board in programming mode
6. Click the button in the UI to upgrade the FW
7. Unplug and replug your device

beef-tool.exe may trigger windows antivirus. This is a false positive and may be safely ignored.