Merge pull request #1661 from tchaikov/wip-rtd-docs

.readthedocs: add .readthedocs.yml

Reviewed-by: Kyr Shatskyy <[email protected]>

.readthedocs.yml

@@ -0,0 +1,19 @@
+---
+# Read the Docs configuration file
+# See https://docs.readthedocs.io/en/stable/config-file/v2.html for details
+
+version: 2
+formats: []
+build:
+  image: latest
+python:
+  version: 3.7
+  install:
+    - method: pip
+      path: .
+      extra_requirements:
+        - orchestra
+    - requirements: docs/requirements.txt
+sphinx:
+  builder: html
+  configuration: docs/conf.py