Fix copyright string

Author: Alec Delaney

docs/conf.py

@@ -47,7 +47,7 @@
 # General information about the project.
 project = "Adafruit MAX7219 Library"
 current_year = str(datetime.datetime.now().year)
-copyright = "2017, Adafruit CiruitPython and Bundle contributors"
+copyright = current_year + " Adafruit CiruitPython and Bundle contributors"
 author = "Michael McWethy"
 
 # The version info for the project you're documenting, acts as replacement for