add .readthedocs.yml

diff --git a/.readthedocs.yml b/.readthedocs.yml
new file mode 100644 (file)
index 0000000..3d34b5a
--- /dev/null
+++ b/.readthedocs.yml
@@ -0,0 +1,9 @@
+version: 2
+
+sphinx:
+  configuration: doc/conf.py
+
+formats: []
+
+python:
+  version: 3.6