docs: update readme

Makefile

@@ -11,7 +11,7 @@ check-wip:
 	python -m pytest tests
 
 serve-api:
-	MANDR_ROOT=.datamander MANDR_PATH=probabl-ai python -m uvicorn mandr.dashboard.webapp:app --reload --reload-dir ./src --host 0.0.0.0 --timeout-graceful-shutdown 0
+	MANDR_ROOT=.datamander python -m uvicorn mandr.dashboard.webapp:app --reload --reload-dir ./src --host 0.0.0.0 --timeout-graceful-shutdown 0
 
 build-frontend:
 	# build the SPA

README.md

@@ -2,13 +2,9 @@
 
 ![lint and test](https://github.com/probabl-ai/mandr/actions/workflows/lint-and-test.yml/badge.svg)
 
-Service to send data into, install via
-
-```
-python -m pip install -e
-python -m pip install flask diskcache pandas altair
-```
+A service to send data into.
 
+## Example
 
 ```python
 from mandr import InfoMander
@@ -21,16 +17,19 @@ mander.add_templates(...)
 mander.add_views(...)
 ```
 
-When ready to view, run flask:
+## Development
 
-```
-python -m flask --app mandr.app run --reload
+Install dependencies with
+```sh
+make install
 ```
 
-## Dependencies
+You can run the API server with
+```sh
+make serve-api
+```
 
-When dependencies are changed in `pyproject.toml` the lockfiles should be updated by running [`pip-compile`](https://github.com/jazzband/pip-tools):
+When dependencies are changed in `pyproject.toml` the lockfiles should be updated via [`pip-compile`](https://github.com/jazzband/pip-tools):
 ```sh
-pip-compile --output-file=requirements.txt pyproject.toml
-pip-compile --extra=test --output-file=requirements-test.txt pyproject.toml
+make pip-compile
 ```