add very simple example

Author: ladyada

README.rst

@@ -13,7 +13,7 @@ Introduction
     :target: https://travis-ci.org/adafruit/Adafruit_CircuitPython_miniQR
     :alt: Build Status
 
-.. todo:: Describe what the library does.
+A non-hardware dependant miniature QR generator library. All native Python!
 
 Dependencies
 =============
@@ -28,7 +28,13 @@ This is easily achieved by downloading
 Usage Example
 =============
 
-See examples folder for QR generating and displaying/drawing
+.. code-block:: python
+	import adafruit_miniqr
+
+	qr = adafruit_miniqr.QRCode()
+	qr.add_data(b'https://www.adafruit.com')
+	qr.make()
+	print(qr.matrix)
 
 Contributing
 ============

examples/miniqr_simpletest.py

@@ -6,7 +6,7 @@
 WHITE = "\x1b[1;47m  \x1b[40m"
 BLACK = "  "
 
-def print_QR(matrix):
+def prettyprint_QR(matrix):
     # white 4-pixel border at top
     for _ in range(4):
         for _ in range(matrix.width+8):
@@ -30,4 +30,5 @@ def print_QR(matrix):
 qr = adafruit_miniqr.QRCode(qr_type=3, error_correct=adafruit_miniqr.L)
 qr.add_data(b'https://www.adafruit.com')
 qr.make()
-print_QR(qr.matrix)
+print(qr.matrix)
+prettyprint_QR(qr.matrix)