Adds Herefordshire docs

doc/source/herefordshire_gov_uk.md

@@ -0,0 +1,36 @@
+# Herefordshire County Council
+
+Support for schedules provided by [Herefordshire County
+Council](https://www.herefordshire.gov.uk/environmental-protection/waste-management/refuse-household-bin-collection),
+serving Herefordshire (UK).
+
+## Configuration via configuration.yaml
+
+```yaml
+waste_collection_schedule:
+    sources:
+    - name: herefordshire_gov_uk
+      args:
+        post_code: POST_CODE
+        number: NUMBER
+
+```
+
+### Configuration Variables
+
+**POST_CODE**  
+*(string) (required)*
+
+**NUMBER**  
+*(string) (required)*
+
+## Examples
+
+```yaml
+waste_collection_schedule:
+    sources:
+    - name: canterbury_gov_uk
+      args:
+        post_code: "hr49js"
+        number: "1"
+```