add docs to readme and only build docs on doc change

.github/workflows/pages.yml

@@ -10,8 +10,8 @@ on:
   push:
     branches:
       - "main"
-    #paths:
-      #-"docs/**"
+    paths:
+      -"docs/**"
 
   # Allows you to run this workflow manually from the Actions tab
   workflow_dispatch:

README.md

@@ -1,3 +1,13 @@
 # scATAC Fragment Tools
 
 Tools for working with scATAC-seq fragment files.
+
+## Installation
+
+git clone https://github.com/aertslab/scatac_fragment_tools.git
+cd scatac_fragment_tools
+pip install .
+
+## Usage
+
+Please visit the [documentation](https://chrisholdgraf.com/blog/2022/install-github-from-pyproject/)