hid-flash should be called hid_flash (Arduino IDE fails to HID flash on OSX)

[Neumi]

The Arduino IDE on OSX returns an error when HID uploading: java.io.IOException: Cannot run program /Users/xxx/Documents/Arduino/hardware/Arduino_STM32/tools/macosx/hid_flash": error=2, No such file or directory

https://github.com/rogerclarkmelbourne/Arduino_STM32/blob/master/tools/macosx/hid-flash

renaming the file solved the problem therefore hid-flash should be called hid_flash

[stevstrong]

Can you please check if 338020b solves the issue?