Update README.md

README.md

-# MFIX-Exa
-This is the public face of the MFIX-Exa project, hosting the documentation,
-gallery of results, etc. The website is: https://amrex-codes.github.io/MFIX-Exa/
+# MFIX-Exa Documentation
+This is the documentation for MFIX-Exa. Every merge request to `main` will get
+built and synced to the AWS S3 bucket, through the pipeline, making the edits live.
+Side branches will only be built through the pipeline. The job artifact can be
+downloaded to see the built documentation.
 
-## Editing
+## User Manual
 
-The documentation source is in `docs/source/` and the html source for the cover
-page is in `docs/webroot/`.
+The MFIX-Exa User Manual is built using [sphinx](https://www.sphinx-doc.org/en/master/)
+with the source located in `docs/user-manual`. The `docs/user-manual/config.py`
+file contains the settings for building this documentation.
 
-:warning: **Do not push any edits to the `gh-pages` branch** as these will be
-overwritten. Instead, commit your changes to the `master` branch, and the
-`gh-pages` branch will be updated automatically a few minutes later.
+AWS S3: https://exa-doc.s3.amazonaws.com/user-manual/latest/index.html
+MFIX: https://mfix.netl.doe.gov/doc/mfix-exa/guide/latest
 
-### Documentation
+## MFIX-Exa PIC VVA Manual
+
+The MFIX-Exa User Manual is built using [sphinx](https://www.sphinx-doc.org/en/master/)
+with the source located in `docs/picvva`. The `docs/picvva/config.py`
+file contains the settings for building this documentation.
+
+AWS S3: https://exa-doc.s3.amazonaws.com/pic-vva/latest/index.html
+MFIX: https://mfix.netl.doe.gov/doc/mfix-exa/vva/pic/latest
+
+## How to build docs locally
 
 The documentation is built using
-[sphinx](https://www.sphinx-doc.org/en/master/). The `docs/source/config.py`
-file contains the settings for building this documentation. The documentation
+[sphinx](https://www.sphinx-doc.org/en/master/).  The documentation
 can be built locally by:
 
 1. Install sphinx:
@@ -37,11 +47,3 @@ The HTML pages will now be located in the `build` directory. Open the
 ```shell
 > firefox build/index.html
 ```
-
-### Doxygen
-
-Whenever the online documentation is updated, a fresh doxygen will be generated
-also. Note that the configuration in `docs/doxygen/doxygen.conf` specifically
-prevent source code from being displayed. This is by design. If you want to
-create your own private doxygen containing the source code also, please
-configure and run the `doc/Doxyfile.in` in your clone of the MFiX-Exa repo.