* Add Arduino SPI diagram for HID
* Arduino SPI wiring and configuration
* Arduino SPI Photos
* Update arduino_hid.md
Some wordsmithing and technical review, some of the parts list has been stated elsewhere but included here with some comments on different parts or other considerations.
* Add TESmart 8 port switch
* Corrected diagram
Corrected diagram of the Arduino SPI HID layout wiring
* Corrected wiring layout
Corrected wiring layout of the Arduino Pro MIcro SPI HID
* moved spi hid image to correct directory
* Updated SPI HID pictures
Updated pictures of the SPI HID wiring to match the updated circuit diagrams.
* Update arduino_hid.md
* Add SPI instructions
SPI instructions and an example end-to-end build and flash of the SPI firmware to an Arduino Micro using SPI.
