Merge pull request adafruit#831 from wickedchicken/wickedchicken-patch-1

Add all boards with links to specific guides

README.rst

@@ -31,11 +31,14 @@ Designed for CircuitPython
 ~~~~~~~~~~~~~~~~~~~~~~~~~~
 
 -  `Adafruit CircuitPlayground
-   Express <https://www.adafruit.com/product/3333>`__
+   Express <https://www.adafruit.com/product/3333>`__ (`CircuitPython Guide <https://learn.adafruit.com/adafruit-circuit-playground-express/circuitpython-quickstart>`__)
 -  `Adafruit Feather M0
-   Express <https://www.adafruit.com/product/3403>`__
--  `Adafruit Metro M0 Express <https://www.adafruit.com/product/3505>`__
--  `Adafruit Gemma M0 <https://www.adafruit.com/product/3501>`__
+   Express <https://www.adafruit.com/product/3403>`__ (`CircuitPython Guide <https://learn.adafruit.com/adafruit-feather-m0-express-designed-for-circuit-python-circuitpython/kattni-circuitpython>`__)
+-  `Adafruit Metro M0 Express <https://www.adafruit.com/product/3505>`_ (`CircuitPython Guide <https://learn.adafruit.com/adafruit-metro-m0-express-designed-for-circuitpython/circuitpython>`__)
+-  `Adafruit Gemma M0 <https://www.adafruit.com/product/3501>`__ (`CircuitPython Guide <https://learn.adafruit.com/adafruit-gemma-m0/circuitpython>`__)
+-  `Adafruit ItsyBitsy M0 Express <https://www.adafruit.com/product/3727>`_ (no CircuitPython Guide yet!)
+-  `Adafruit Trinket M0 <https://www.adafruit.com/product/3500>`__ (`CircuitPython Guide <https://learn.adafruit.com/adafruit-trinket-m0-circuitpython-arduino/circuitpython>`__)
+-  `Adafruit Metro M4 <https://www.adafruit.com/product/3382>`__ (`CircuitPython Guide <https://learn.adafruit.com/adafruit-metro-m4-express-featuring-atsamd51/overview>`__)
 
 Other
 ~~~~~