Merge pull request #5 from GEOS-ESM/rreichle/documentation/initial

initial documentation (CHANGELOG.md, README.md)

Author: mathomp4

CHANGELOG.md

@@ -1,12 +1,22 @@
-# Changelog
+# Changelog for `GEOSldas_GridComp`
 
 All notable changes to this project will be documented in this file.
 
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+-----------------------------
+
 ## [Unreleased]
 
+-----------------------------
+
+## [v1.0.0] - 2024-03-26
+
+- Inaugural version.  0-diff vs. GEOSldas v18.0.0.
+
+-----------------------------
+
 ### Added
 
 ### Changed

README.md

@@ -1 +1,21 @@
 # GEOSldas_GridComp
+
+The `GEOSldas_GridComp` repository contains the source code for the GEOS land modeling and data assimilation system (`GEOSldas`). 
+
+
+## History
+
+The repository was created in March 2024 by extracting the GEOSldas source code from the [`GEOSldas` fixture](https://github.com/GEOS-ESM/GEOSldas). 
+
+The new repository was needed to facilitate the use of the `GEOSldas_GridComp` as an external repository in both the [`GEOSldas` fixture](https://github.com/GEOS-ESM/GEOSldas) and the [GEOS atmospheric data assimilation (`GEOSadas`) fixture](https://github.com/GEOS-ESM/GEOSadas). 
+
+
+## Contributing
+
+Please check out our [contributing guidelines](CONTRIBUTING.md).
+
+## License
+
+All files are currently licensed under the [Apache-2.0 license (`LICENSE`)](LICENSE).
+
+Previously, the code was licensed under the [NASA Open Source Agreement, Version 1.3 (`LICENSE-NOSA`)](LICENSE-NOSA).