README.md: reference framebuf_utils optimisation.

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Peter Hinch 2020-10-02 18:13:22 +01:00
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@ -150,6 +150,9 @@ ssd.line(0, 0, 127, 95, ssd.rgb(0, 255, 0)) # Green diagonal corner-to-corner
ssd.rect(0, 0, 15, 15, ssd.rgb(255, 0, 0)) # Red square at top left
ssd.show()
```
Color applications which do a lot of text rendering may achieve a speed gain by
means of
[this optimisation](https://github.com/peterhinch/micropython-font-to-py/blob/master/writer/WRITER.md#224-a-performance-boost).
###### [Contents](./README.md#contents)