Adding a humble mention of urllib3 to the Requests intros.

Author: shazow

README.rst

@@ -27,8 +27,9 @@ See `the same code, without Requests <https://gist.github.com/973705>`_.
 Requests allow you to send  **HEAD**, **GET**, **POST**, **PUT**,
 **PATCH**, and **DELETE** HTTP requests. You can add headers, form data,
 multipart files, and parameters with simple Python dictionaries, and access the
-response data in the same way. It's powered by httplib, but it does
-all the hard work and crazy hacks for you.
+response data in the same way. It's powered by httplib and `urllib3
+<https://github.com/shazow/urllib3>`_, but it does all the hard work and crazy
+hacks for you.
 
 
 Features

docs/index.rst

@@ -28,7 +28,7 @@ Things shouldn’t be this way. Not in Python.
 
 See `the same code, without Requests <https://gist.github.com/973705>`_.
 
-Requests takes all of the work out of Python HTTP — making your integration with web services seamless. There's no need to manually add query strings to your URLs, or to form-encode your POST data.
+Requests takes all of the work out of Python HTTP — making your integration with web services seamless. There's no need to manually add query strings to your URLs, or to form-encode your POST data. The core of Requests is powered by `urllib3 <https://github.com/shazow/urllib3>`_ which is included as part of the Requests package.
 
 
 Testimonials