Merge #259

259: add the st7789 driver r=jamesmunns a=almindor

Released the [ST7789](https://crates.io/crates/st7789) with [examples](https://github.com/almindor/st7789-examples)


Co-authored-by: Ales Katona <almindor@gmail.com>
Co-authored-by: James Munns <james.munns@ferrous-systems.com>

Author: 3 people

README.md

@@ -513,7 +513,8 @@ have achieved the "released" status (published on crates.io + documentation / sh
 1. [usbd-midi] - USB MIDI class implementation - [github][41] - ![crates.io](https://img.shields.io/crates/v/usbd-midi.svg)
 1. [usbd-webusb] - USB webUSB class implementation - [github][39] - ![crates.io](https://img.shields.io/crates/v/usbd-webusb.svg)
 1. [SHTCx] - I2C - Temperature / humidity sensors - [github][42] - ![crates.io](https://img.shields.io/crates/v/shtcx.svg)
-1. [DW1000] - SPI - Radio transceiver (IEEE 802.15.4 and position tracking) - [Article][44] - ![crates.io](https://img.shields.io/crates/v/dw1000.svg)
+1. [ST7789] - SPI - An embedded-graphics compatible driver for the popular lcd family from Sitronix used in the PineTime watch [github][44] ![crates.io](https://img.shields.io/crates/v/st7789.svg)
+1. [DW1000] - SPI - Radio transceiver (IEEE 802.15.4 and position tracking) - [Article][45] - ![crates.io](https://img.shields.io/crates/v/dw1000.svg)
 
 [1&2]: http://blog.japaric.io/wd-1-2-l3gd20-lsm303dlhc-madgwick/
 [3]: http://pramode.in/2018/02/24/an-introduction-to-writing-embedded-hal-based-drivers-in-rust/
@@ -556,7 +557,8 @@ have achieved the "released" status (published on crates.io + documentation / sh
 [41]: https://github.com/btrepp/usbd-midi
 [42]: https://github.com/dbrgn/shtcx-rs
 [43]: https://jitter.company/blog/2020/02/14/adxl355-embedded-hal-driver-crate/
-[44]: https://braun-embedded.com/dw1000/
+[44]: https://github.com/almindor/st7789
+[45]: https://braun-embedded.com/dw1000/
 
 [AD983x]: https://crates.io/crates/ad983x
 [adafruit-alphanum4]: https://crates.io/crates/adafruit-alphanum4
@@ -601,6 +603,7 @@ have achieved the "released" status (published on crates.io + documentation / sh
 [usbd-midi]: http://crates.io/crates/usbd-midi
 [usbd-webusb]: http://crates.io/crates/usbd-webusb
 [SHTCx]: http://crates.io/crates/shtcx
+[ST7789]: http://crates.io/crates/st7789
 [DW1000]: https://crates.io/crates/dw1000
 
 *NOTE* You may be able to find even more driver crates by searching for the [`embedded-hal-driver`]