Update README.md

README.md

@@ -1,29 +1,14 @@
-# zenith
+# Zenith
 
-This is the top level repo containing the following submodules
+Zenith substitutes PostgreSQL storage layer and redistributes data across a cluster of nodes
 
-1. vendor/postgres - upstream postgres code
-  * zenith branch contains our changes
-  * These changes are relatively small and will be either upstreamed or
-    moved to an extension
-
-2. pageserver - the code that deals with buffer pages disaggregated from
-   compute nodes.
-
-3. walkeeper - the code that takes the WAL from postgres and signals to
-   postgres when it's safe to consider a transaction committed.
-
-4. consensus - Implement distributed consensus between compute and storage
-   nodes.
-
-5. cli - Tooling used to have a friendly workflow that allows migration to/from
-   zenith storage system and cloud provider's object storage services.
-
-Recommended workflow:
+## Running tests
 
+```sh
+git clone --recursive https://github.com/libzenith/zenith.git
+./pgbuild.sh # builds postgres and installs it to ./tmp_install
+cargo test
 ```
-$ git clone https://github.com/libzenith/zenith
-$ git submodule update --init --recursive
-$ cargo build
-$ cargo test
-```
+
+
+