Add basic build instructions to README.md

README.md

@@ -1,2 +1,27 @@
-# localhub
+# Locality
 
+The [dev](./dev) script starts a Docker image for the Postgres server,
+runs `cargo run` or `cargo test`, and then removes the created Docker
+container.
+
+Docker must be set up to run rootless for this script to work.
+
+The script is able to install it's own dependencies into a Python
+virtual environment:
+
+```sh
+# Install
+./dev devupdate
+```
+
+Build and run the server locally:
+
+```sh
+./dev run
+```
+
+Run unit tests:
+
+```sh
+./dev unittest
+```

dev.py

@@ -39,7 +39,7 @@ run_parser = subparsers.add_parser(
 )
 run_parser.set_defaults(func=run)
 run_parser = subparsers.add_parser(
-    'unit_test', help='Run unit tests'
+    'unittest', help='Run unit tests'
 )
 run_parser.set_defaults(func=unit_tests)
 devupdate_parser = subparsers.add_parser(