Add sink example

examples/sink_example.py

@@ -0,0 +1,10 @@
+"""This is an example of a hug "sink", these enable all request URLs that start with the one defined to be captured
+
+To try this out, run this api with hug sink_example.py and hit any URL after localhost:8000/all/ (for example: localhost:8000/all/the/things/
+"""
+import hug
+
+
+@hug.sink('/all')
+def my_sink(request):
+    return request.path.replace('/all', '')