add readme

README.md

@@ -1 +1,22 @@
-# Back-end
+# Websockets server
+
+## Quick start
+
+This project uses [GNU make](https://www.gnu.org/software/make/) to build and run. When available, type `make` and hit enter to see what is available:
+
+```
+➜ make
+Targets:
+  venv         - Create virtualenv in .venv
+  install      - Install deps and this package
+  run          - Run the server via 'python -m medtrace_synth'
+  install-dev  - Install deps (and this package) in dev mode
+  dev          - Run using PYTHONPATH=src (no install)
+  build        - Build sdist and wheel into dist/
+  clean        - Remove build artifacts
+  nuke         - Clean artifacts and remove .venv
+```
+
+Try `make run` to download all dependencies and run the server.
+
+> Note that running `make dev` will start the server and watch the `src` directory, but you also will need to have the `pojagi-dsp` project locally, and the `POJAGI_DSP_PATH` environment variable exported to point to the top level of that project's directory.