fix codeblock spacing

ladyada · ladyada · commit 2b9e59bf9a86 · 2018-09-16T13:07:17.000-04:00
diff --git a/README.rst b/README.rst
@@ -29,6 +29,7 @@ Usage Example
 =============
 
 .. code-block:: python
+
 	import adafruit_miniqr
 
 	qr = adafruit_miniqr.QRCode()
