Added badges and a short description to the README. (#6)

README.md

@@ -1,2 +1,26 @@
 # solar-dynamics-observatory
+
+[![tests](https://github.com/sun-data/solar-dynamics-observatory/actions/workflows/tests.yml/badge.svg)](https://github.com/sun-data/solar-dynamics-observatory/actions/workflows/tests.yml)
+[![codecov](https://codecov.io/gh/sun-data/solar-dynamics-observatory/graph/badge.svg?token=9VdGTSq2hT)](https://codecov.io/gh/sun-data/solar-dynamics-observatory)
+[![Black](https://github.com/sun-data/solar-dynamics-observatory/actions/workflows/black.yml/badge.svg)](https://github.com/sun-data/solar-dynamics-observatory/actions/workflows/black.yml)
+[![Ruff](https://github.com/sun-data/solar-dynamics-observatory/actions/workflows/ruff.yml/badge.svg)](https://github.com/sun-data/solar-dynamics-observatory/actions/workflows/ruff.yml)
+[![Documentation Status](https://readthedocs.org/projects/sdo/badge/?version=latest)](https://sdo.readthedocs.io/en/latest/?badge=latest)
+[![PyPI version](https://badge.fury.io/py/solar-dynamics-observatory.svg)](https://badge.fury.io/py/solar-dynamics-observatory)
+
 A Python library to download and analyze data from the NASA Solar Dynamics Observatory (SDO).
+
+This library uses the [Sunpy](https://sunpy.org/) package to download the images
+and the [aiapy](https://aiapy.readthedocs.io) package to align and prepare the 
+images to be ready for scientific analysis.
+
+While this package uses Sunpy to download the data, it does not represent SDO
+images as instances of
+[`sunpy.map.Map`](https://docs.sunpy.org/en/stable/generated/api/sunpy.map.Map.html),
+it represents images using [`named_arrays.FunctionArray`](https://named-arrays.readthedocs.io/en/latest/_autosummary/named_arrays.FunctionArray.html).
+
+## Installation
+
+This package is published on PyPI and can be installed using pip
+```bash
+pip install solar-dynamics-observatory
+```