Update README.rst

README.rst

@@ -4,4 +4,34 @@ summit_testing_analysis
 
 ``summit_testing_analysis`` is a package in the `LSST Science Pipelines <https://pipelines.lsst.io>`_.
 
-.. Add a brief (few sentence) description of what this package provides.
+It contains code to analyse the performance of Rubin Observatory's components. 
+Such as M1M3, M2, hexapods, rotator, mount, etc. 
+
+Contributing
+============
+
+* This repository uses the development guidelines described in
+  https://developer.lsst.io/.
+
+* The code format should follow the guidelines in 
+  https://developer.lsst.io/python/formatting.html
+
+  We use two tools to help with code standards compliance. 
+  They are `black` and `isort`. Use them with the following commands:
+
+.. code-block:: bash
+
+    black .
+    isort .
+
+* This repository is configure with a pre-commit hook. In other words, 
+  it contains an automatic code check before you commit your changes. 
+  Before you can commit your changes, you need to install the pre-commit:
+
+.. code-block:: bash
+
+    mamba install -c lsstts ts-pre-commit-config
+    generate_pre_commit_conf
+    pre-commit install 
+    pre-commit run --all-files
+