first version of readthedocs (#278)

.readthedocs.yaml

@@ -17,7 +17,7 @@ build:
 
 # Build documentation in the "docs/" directory with Sphinx
 sphinx:
-  configuration: docs/conf.py
+  configuration: docs/source/conf.py
 
 # Optionally build your docs in additional formats such as PDF and ePub
 # formats:
@@ -27,6 +27,6 @@ sphinx:
 # Optional but recommended, declare the Python requirements required
 # to build your documentation
 # See https://docs.readthedocs.io/en/stable/guides/reproducible-builds.html
-# python:
-#    install:
-#    - requirements: docs/requirements.txt
+python:
+   install:
+   - requirements: docs/requirements.txt