update readme

Author: jonhealy1

README.md

@@ -1,12 +1,8 @@
-# STAC FastAPI Elasticsearch (sfes)
+# stac-fastapi-elasticsearch-opensearch (sfeos)
 
-## Elasticsearch backend for stac-fastapi
+## Elasticsearch and Opensearch backends for the stac-fastapi project
 
-#### Join our [Gitter](https://gitter.im/stac-fastapi-elasticsearch/community) page
 
-#### Check out the public Postman documentation [Postman](https://documenter.getpostman.com/view/12888943/2s8ZDSdRHA)
-
-#### Check out the examples folder for deployment options, ex. running sfes from pip in docker
 
 #### For changes, see the [Changelog](CHANGELOG.md)
 
@@ -19,6 +15,13 @@ To install the classes in your local Python env, run:
 pip install -e 'stac_fastapi/elasticsearch[dev]'
 ```
 
+or
+
+```shell
+pip install -e 'stac_fastapi/opensearch[dev]'
+```
+
+
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