Follow docs instructions.

Change-Id: If54c641be966dc01798a9815d9f82d184ada8452
Signed-off-by: Tommy Carpenter <tc677g@att.com>
diff --git a/.readthedocs.yaml b/.readthedocs.yaml
new file mode 100644
index 0000000..095222a
--- /dev/null
+++ b/.readthedocs.yaml
@@ -0,0 +1,16 @@
+---
+version: 2
+
+formats:
+  - htmlzip
+
+build:
+  image: latest
+
+python:
+  version: 3.7
+  install:
+    - requirements: docs/requirements-docs.txt
+
+sphinx:
+  configuration: docs/conf.py