Merge pull request #14657 from ghostwriternr/reflection-readme

Create README for gRPC Python reflection package

src/python/grpcio_reflection/README.rst

@@ -0,0 +1,10 @@
+gRPC Python Reflection package
+==============================
+
+Reference package for reflection in GRPC Python.
+
+Dependencies
+------------
+
+Depends on the `grpcio` package, available from PyPI via `pip install grpcio`.
+