add ics yaml for zfa-iserlohn.de

doc/ics/zfa_iserlohn_de.md

@@ -0,0 +1,32 @@
+# ZfA Iserlohn
+
+ZfA Iserlohn is supported by the generic [ICS](/doc/source/ics.md) source. For all available configuration options, please refer to the source description.
+
+
+## How to get the configuration arguments
+
+- Goto <https://www.zfa-iserlohn.de/> and select your municipality.
+- Click on `Leerungstermine`
+- Right-click on `Leerungstermine 20xx als Kaldender-Datei (ICS-Format)` and copy link address.
+- Replace the `url` in the example configuration with this link.
+
+## Examples
+
+### Menden, Bahnstrasse
+
+```yaml
+waste_collection_schedule:
+  sources:
+    - name: ics
+      args:
+        url: https://www.zfa-iserlohn.de/kalender_75e408a534610f9326bd4edd4956abbb.ics
+```
+### Iserlohn, Bahnhofsplatz
+
+```yaml
+waste_collection_schedule:
+  sources:
+    - name: ics
+      args:
+        url: https://www.zfa-iserlohn.de/kalender_8592ee817bbd0298caa04766b9925484.ics
+```