Instead of requiring everyone to download and install another Arduino
library to use this lib, include an optimized, self-contained one from
the 8266 VM PR: esp8266/Arduino#6994

Does change the API as it now requires a HW chip select, so that
parameter is removed from the SpiRAM buffer object.

SPI FIFO needs special care so do all work in a RAM copy and the copy it
over manually w/32b writes.

Ensure the SPI command is done before touching the FIFO.

Fix buffering organization.

Make the buffer report status as a #### bar.

Also add the resistor to the 1T circuit to avoid transistor overheating.