Add details about uWSGI as WSGI server

Author: davidjb

docs/scenarios/web.rst

@@ -156,6 +156,25 @@ setup for Nginx + Gunicorn can be found in the
 
 .. _uwsgi-ref:
 
+uWSGI
+-----
+
+`uWSGI <https://uwsgi-docs.readthedocs.org>`_ is a full stack for building
+hosting services.  In addition to process management, process monitoring, 
+and other functionality, uWSGI acts as an application server for various 
+programming languages and protocols - including Python and WSGI. uWSGI can
+either be run as a stand-alone web router, or be run behind a full web 
+server (such as Nginx or Apache).  In the latter case, a web server can
+configure uWSGI and an application's operation over the
+`uwsgi <https://uwsgi-docs.readthedocs.org/en/latest/Protocol.html>`_
+protocol.  uWSGI's web server support allows for dynamically configuring 
+Python, passing environment variables and further tuning.  For full details,
+see `uWSGI magic
+variables <https://uwsgi-docs.readthedocs.org/en/latest/Vars.html>`_.
+
+
+.. _server-best-practices-ref:
+
 
 Server Best Practices
 :::::::::::::::::::::