DM: update readme example

Author: deanm1278

README.rst

@@ -37,24 +37,32 @@ Usage Example
     from adafruit_epd.epd import Adafruit_EPD
     from adafruit_epd.il0373 import Adafruit_IL0373
 
-    #create the spi device and pins we will need
+    # create the spi device and pins we will need
     spi = busio.SPI(board.SCK, MOSI=board.MOSI, MISO=board.MISO)
     ecs = digitalio.DigitalInOut(board.D10)
     dc = digitalio.DigitalInOut(board.D9)
     srcs = digitalio.DigitalInOut(board.D8)
     rst = digitalio.DigitalInOut(board.D7)
     busy = digitalio.DigitalInOut(board.D6)
 
-    #give them all to our driver
+    # give them all to our driver
     display = Adafruit_IL0373(152, 152, rst, dc, busy, srcs, ecs, spi)
 
-    #clear the buffer
+    # clear the buffer
     display.clear_buffer()
 
-    #draw some arbitrary lines and shapes!!
-    display.fill_rect(30, 20, 50, 60, Adafruit_EPD.RED)
-    display.hline(120, 30, 60, Adafruit_EPD.BLACK)
-    display.vline(120, 30, 60, Adafruit_EPD.BLACK)
+    r_width = 5
+    r_pos = display.height
+
+    #draw some rectangles!
+    color = Adafruit_EPD.BLACK
+    while r_pos > display.height/2:
+        if r_pos < display.height - 50:
+            color = Adafruit_EPD.RED
+        display.rect(display.width - r_pos, display.height - r_pos,
+                    display.width - 2*(display.width - r_pos),
+                    display.height - 2*(display.height - r_pos), color)
+        r_pos = r_pos - r_width
 
     display.display()