Update 'requests' lib to v2.0.

third_party/requests/__init__.py

 # -*- coding: utf-8 -*-
 
 #   __
 #  /__)  _  _     _   _ _/   _
 # / (   (- (/ (/ (- _)  /  _)
 #          /
 
 """
 requests HTTP library
 ~~~~~~~~~~~~~~~~~~~~~
@@ skipping 24 matching lines @@
 
 The other HTTP methods are supported - see `requests.api`. Full documentation
 is at <http://python-requests.org>.
 
 :copyright: (c) 2013 by Kenneth Reitz.
 :license: Apache 2.0, see LICENSE for more details.
 
 """
 
 __title__ = 'requests'
-__version__ = '1.2.3'
-__build__ = 0x010203
+__version__ = '2.0.0'
+__build__ = 0x020000
 __author__ = 'Kenneth Reitz'
 __license__ = 'Apache 2.0'
 __copyright__ = 'Copyright 2013 Kenneth Reitz'
 
 # Attempt to enable urllib3's SNI support, if possible
 try:
-    from requests.packages.urllib3.contrib import pyopenssl
+    from .packages.urllib3.contrib import pyopenssl
     pyopenssl.inject_into_urllib3()
 except ImportError:
     pass
 
 from . import utils
 from .models import Request, Response, PreparedRequest
 from .api import request, get, head, post, patch, put, delete, options
 from .sessions import session, Session
 from .status_codes import codes
 from .exceptions import (
     RequestException, Timeout, URLRequired,
     TooManyRedirects, HTTPError, ConnectionError
 )
 
 # Set default logging handler to avoid "No handler found" warnings.
 import logging
 try:  # Python 2.7+
     from logging import NullHandler
 except ImportError:
     class NullHandler(logging.Handler):
         def emit(self, record):
             pass
 
 logging.getLogger(__name__).addHandler(NullHandler())