Update README.md

added ploting functionnality

Author: HughMaingauche

README.md

@@ -8,6 +8,7 @@ This is an upgrade of my previous VGA micropython display library, using the pic
 Other immrovements are:
 - Use of the DMA included library instead of direct registry modification
 - Chaged the font system to use xglcd fonts (from rdagger library https://github.com/rdagger/micropython-ili9341/tree/master)
+- Added a plotting library to do real time plotting more easily
 
 I tried to document the code as much as I could. I have no doubt that this can be optimized quite a lot.
 If any of you is interested in using or improving it, i'll be happy to provide further explanations.