Mention read-only influxdb token in README instructions

README.md

@@ -33,20 +33,28 @@ the "root" user under `/opt/metobs/metobs_api`.
    sudo /opt/metobs/metobs_api/bin/pip install -e repos/git/MetObsAPI/
    ```
 
-4. Copy systemd files if necessary:
+4. Copy read-only influxdb token from /home/metobs to app directory:
+
+   ```bash
+   sudo cp /home/metobs/influxdbv2_metobs_ro.txt repos/git/MetObsAPI/
+   ```
+
+   Make sure it is readable by all.
+
+5. Copy systemd files if necessary:
 
    ```bash
    sudo cp repos/git/MetObsAPI/etc/systemd/system/metobs_api* /etc/systemd/system/
    ```
 
-5. Enable service:
+6. Enable service:
 
    ```bash
    sudo systemctl enable metobs_api
    sudo systemctl start metobs_api
    ```
 
-6. Start service:
+7. Start service:
 
    ```bash
    sudo systemctl start metobs_api