Updated READTHEDOCS file to version 2

.readthedocs.yml

@@ -1,7 +1,22 @@
-# SPDX-FileCopyrightText: 2017 Scott Shawcroft, written for Adafruit Industries
+# SPDX-FileCopyrightText: 2021 ladyada for Adafruit Industries
 #
 # SPDX-License-Identifier: Unlicense
 
+# Read the Docs configuration file
+# See https://docs.readthedocs.io/en/stable/config-file/v2.html for details
+
+# Required
+version: 2
+
+sphinx:
+  configuration: docs/conf.py
+
+build:
+  os: ubuntu-lts-latest
+  tools:
+    python: "3"
+
 python:
-    version: 3
-requirements_file: requirements.txt
+  install:
+    - requirements: docs/requirements.txt
+    - requirements: requirements.txt

docs/requirements.txt

@@ -0,0 +1,7 @@
+# SPDX-FileCopyrightText: 2021 Kattni Rembor for Adafruit Industries
+#
+# SPDX-License-Identifier: Unlicense
+
+sphinx
+sphinxcontrib-jquery
+sphinx-rtd-theme