Merge pull request #468 from Natim/master

Update readthedocs links.

httpie/client.py

@@ -14,7 +14,7 @@ from httpie.plugins import plugin_manager
 from httpie.utils import repr_dict_nice
 
 try:
-    # https://urllib3.readthedocs.org/en/latest/security.html
+    # https://urllib3.readthedocs.io/en/latest/security.html
     urllib3.disable_warnings()
 except AttributeError:
     # In some rare cases, the user may have an old version of the requests

setup.py

@@ -56,7 +56,7 @@ if 'bdist_wheel' not in sys.argv:
 
 # bdist_wheel
 extras_require = {
-    # http://wheel.readthedocs.org/en/latest/#defining-conditional-dependencies
+    # http://wheel.readthedocs.io/en/latest/#defining-conditional-dependencies
     ':python_version == "2.6"'
     ' or python_version == "3.0"'
     ' or python_version == "3.1" ': ['argparse>=1.2.1'],