Readthedocs (#43)

* update readme

* readthedocs.yaml

Author: TexasCoding

.readthedocs.yaml

@@ -0,0 +1,12 @@
+version: 2
+
+build:
+  os: "ubuntu-20.04"
+  tools:
+    python: "3.12"
+sphinx:
+  configuration: docs/source/conf.py
+
+python:
+  install:
+    - requirements: docs/rtd_requirements.txt