Flashing Pro-Micro Clone (atmega32u4) from Command Line

I recently got Sparkfun Pro Micro clone from Ebay.  In order to flash it with a hex file I had to quickly ground the reset pin twice and then run:

avrdude -v -patmega32u4 -cavr109 -P/dev/cu.usbmodem1411 -b57600 -D -Uflash:w:MassStorage.hex:i