Added support to conda in the readthedocs configuration

.readthedocs.yml

@@ -5,19 +5,12 @@
 # Required
 version: 2
 
+conda:
+  environment: docs/environment.yml
+
 # Build documentation in the docs/ directory with Sphinx
 sphinx:
-  configuration: docs/conf.py
-
-# Build documentation with MkDocs
-#mkdocs:
-#  configuration: mkdocs.yml
+  configuration: docs/source/conf.py
 
 # Optionally build your docs in additional formats such as PDF and ePub
-formats: all
-
-# Optionally set the version of Python and requirements required to build your docs
-python:
-  version: 3.7
-  install:
-    - requirements: docs/requirements.txt
+formats: all