Add crontab and systemd service in readme

README.md

@@ -1,3 +1,33 @@
 # Writefreely stats
 Simple flask app to receive Writefreely blog stats as CSV and send them to InfluxDB
 
+## Crontask
+
+Send your stats every 10 minutes:
+
+```
+*/10 * * * * sqlite3 /srv/writefreely/writefreely.db ".mode csv" ".header on" "select id, slug, view_count, title from posts order by view_count desc;" | curl -X POST -H "Content-Type: text/csv" -m 30 --data-binary @- "http://<YOUR_INSTANCE>:<PORT>/stats"
+```
+
+## systemd service
+
+```
+# /etc/systemd/system/blog_stats.service
+
+[Unit]
+Description=Blog stats
+After=network-online.target influxdb.service
+
+[Service]
+Type=simple
+User=pi
+WorkingDirectory=/home/pi/blog_stats
+ExecStart=/home/pi/blog_stats/.venv/bin/uwsgi --http [::]:<PORT> --wsgi-file main.py --callable app
+Environment="INFLUX_USER=<USER>"
+Environment="INFLUX_PASSWORD=<PWD>"
+Environment="INFLUX_DB=<DB>"
+
+[Install]
+WantedBy=multi-user.target
+```
+