Add development environment docs in README

README.md

@@ -1 +1,27 @@
-# KeRS - Kelder Registratie Systeem
+# KeRS - Kelderregistratiesysteem
+
+## Development
+Install Python and virtualenv if not already available.
+
+Choose between:
+* SQLite3 (easier to set up, works because we don't do advanced DB shizzlery or custom SQL yet)
+* MySQL/MariaDB (used in production, less chance of weird bugs due to compatibility problems between SQLite3 and MariaDB)
+
+If you choose SQLite3, set the environment variable `KERS_DB_BACKEND` to sqlite3. To do so, you can
+add `export KERS_DB_BACKEND=sqlite3` to your shell's init file (e.g. `~/.bashrc`) and restart your
+shell.
+
+If you choose MySQL/MariaDB, set up the server, and look in `KeRS/settings.py` for the possible
+environment variables you can set (e.g. `DATABASE_NAME`).
+
+Set up the development environment:
+```bash
+python -m virtualenv venv
+venv/bin/pip install -r requirements
+make migrate
+```
+
+To run the development server:
+```bash
+make
+```