Keyboard: Add tada68 flashing instructions for Mac (#3424)

keyboards/tada68/readme.md

@@ -13,7 +13,7 @@ Make example for this keyboard (after setting up your build environment):
 
 See [build environment setup](https://docs.qmk.fm/#/getting_started_build_tools) then the [make instructions](https://docs.qmk.fm/#/getting_started_make_guide) for more information.
 
-## Flashing Instructions
+## Flashing Instructions (Win)
 
 *Read all the instructions, there are a few warnings of things to avoid doing to avoid bricking your Tada68. __It is much too easy to do!__*
 
@@ -29,3 +29,30 @@ $ make tada68:default:flashbin
 4) Delete `FLASH.BIN` from the TADA drive and copy `tada68_default.bin` that was generated at the root of the qmk directory into the TADA drive.
 
 5) *Do not eject the USB device.* Hit ESC on the keyboard. The lights will stop flashing and your firmware is loaded!
+
+## Flashing Instructions (Mac)
+
+*When flashing the keyboard from a Mac, you must delete some files that are automatically created by the operating system in order to prevent bricking your keyboard.  Original information from /u/pawlwall from https://www.reddit.com/r/MechanicalKeyboards/comments/520cov/using_an_originative_tada86_on_a_mac/*
+
+1) from the `qmk_firmware\` directory run:
+```
+$ make tada68:default:flashbin
+```
+
+2) Connect your keyboard to your Mac, hit the reset button on the bottom of the TADA, the lights will start flashing.
+
+3) You'll see a new drive on your computer called TADA68. Backup the original factory `FLASH.BIN` file that's inside it.
+
+4) Open the terminal and cd to the folder where the keyboard has been mounted
+
+`cd /Volumes/TADA68\ /`
+
+5) Copy over your new firmware to the keyboard
+
+`cp -r <path to your qmk_firmware folder>/FLASH.bin .`
+
+6) Remove files that MacOS automatically created which interfere with the keyboard
+
+`rm -fr .Trashes/ .fseventsd/ ._.Trashes ._FLASH.bin`
+
+7) Eject the USB device or hit ESC on the keyboard. The lights will stop flashing and your firmware is loaded!