Improve README

README.md

@@ -1,12 +1,14 @@
 # Type stubs for proto-plus-stubs
 [![PyPI version](https://badge.fury.io/py/proto-plus-stubs.svg)](https://badge.fury.io/py/proto-plus-stubs)
 
-This package provides type stubs for the [proto-plus](https://pypi.org/project/proto-plus/) package.
+This package provides type stubs for the [proto-plus](https://pypi.org/project/proto-plus/) package. It allows you to type check usage of the library with e.g. [mypy](http://mypy-lang.org/) and will also improve autocomplete in many editors.
 
 **This is in no way affiliated with Google.**
 
-The stubs were created automatically by [stubgen](https://mypy.readthedocs.io/en/stable/stubgen.html).
+The stubs were originally created by [stubgen](https://mypy.readthedocs.io/en/stable/stubgen.html), but have seen some manual improvements since then. Further contributions are welcome.
+
 ## Installation
 ```shell script
 $ pip install proto-plus-stubs
 ```
+The stubs should be automatically picked up by your editor or typechecker.