mention in Readme that ST7735R and ST7735S are supported

Author: philippkeller

README.rst

@@ -17,7 +17,7 @@ Port of display drivers from https://github.com/adafruit/micropython-adafruit-rg
 
 .. note:: This driver currently won't work on micropython.org firmware, instead you want the micropython-adafruit-rgb-display driver linked above!
 
-This CircuitPython driver currently supports displays that use the following display-driver chips: HX8353, HX8357, ILI9341, S6D02A1, ST7789, SSD1331, SSD1351, and ST7735.
+This CircuitPython driver currently supports displays that use the following display-driver chips: HX8353, HX8357, ILI9341, S6D02A1, ST7789, SSD1331, SSD1351, and ST7735 (including variants ST7735R and ST7735S).
 
 Dependencies
 =============

adafruit_rgb_display/st7735.py

@@ -84,6 +84,7 @@
 _GMCTRP1 = const(0xE0)
 _GMCTRN1 = const(0xE1)
 
+
 class ST7735(DisplaySPI):
     """
     A simple driver for the ST7735-based displays.