Add 'requests' library to third_party.

third_party/requests/README.rst

+Requests: HTTP for Humans
+=========================
+
+
+.. image:: https://travis-ci.org/kennethreitz/requests.png?branch=master
+        :target: https://travis-ci.org/kennethreitz/requests
+
+.. image:: https://pypip.in/d/requests/badge.png
+        :target: https://crate.io/packages/requests/
+
+Requests is an Apache2 Licensed HTTP library, written in Python, for human
+beings.
+
+Most existing Python modules for sending HTTP requests are extremely
+verbose and cumbersome. Python's builtin urllib2 module provides most of
+the HTTP capabilities you should need, but the api is thoroughly broken.
+It requires an enormous amount of work (even method overrides) to
+perform the simplest of tasks.
+
+Things shouldn't be this way. Not in Python.
+
+.. code-block:: pycon
+
+    >>> r = requests.get('https://api.github.com', auth=('user', 'pass'))
+    >>> r.status_code
+    204
+    >>> r.headers['content-type']
+    'application/json'
+    >>> r.text
+    ...
+
+See `the same code, without Requests <https://gist.github.com/973705>`_.
+
+Requests allow you to send HTTP/1.1 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 and `urllib3
+<https://github.com/shazow/urllib3>`_, but it does all the hard work and crazy
+hacks for you.
+
+
+Features
+--------
+
+- International Domains and URLs
+- Keep-Alive & Connection Pooling
+- Sessions with Cookie Persistence
+- Browser-style SSL Verification
+- Basic/Digest Authentication
+- Elegant Key/Value Cookies
+- Automatic Decompression
+- Unicode Response Bodies
+- Multipart File Uploads
+- Connection Timeouts
+- Thread-safety
+
+
+Installation
+------------
+
+To install requests, simply:
+
+.. code-block:: bash
+
+    $ pip install requests
+
+Or, if you absolutely must:
+
+.. code-block:: bash
+
+    $ easy_install requests
+
+But, you really shouldn't do that.
+
+
+Documentation
+-------------
+
+Documentation is available at http://docs.python-requests.org/.
+
+
+Contribute
+----------
+
+#. Check for open issues or open a fresh issue to start a discussion around a feature idea or a bug. There is a Contributor Friendly tag for issues that should be ideal for people who are not very familiar with the codebase yet.
+#. Fork `the repository`_ on Github to start making your changes to the **master** branch (or branch off of it).
+#. Write a test which shows that the bug was fixed or that the feature works as expected.
+#. Send a pull request and bug the maintainer until it gets merged and published. :) Make sure to add yourself to AUTHORS_.
+
+.. _`the repository`: http://github.com/kennethreitz/requests
+.. _AUTHORS: https://github.com/kennethreitz/requests/blob/master/AUTHORS.rst