Add section for similar projects

include links to Patents Client python library

Author: mikeym88

README.md

@@ -4,6 +4,10 @@ This project is a wrapper for the PatentsView API.
 
 * [PatentsView Glossary](http://www.patentsview.org/api/glossary.html) provides a description of the variables.
 
+## Similar Projects
+
+* The Patents Client project is a Python client for patents: [PyPI](https://pypi.org/project/patent-client/) | [GitHub](https://github.com/parkerhancock/patent_client) | [Docs](https://patent-client.readthedocs.io/en/latest/).
+
 ## Important Notes:
 
 * Use <https://dev.patentsview.org> and not <https://www.patentsview.org/>; the former is laxer in terms of accepting input