Update links in readme for github/pypi

* Browser support/etc
* latest -> stable

Author: agjohnson

README.rst

@@ -22,7 +22,7 @@ a working demo of the theme in the `theme documentation`_
 
 .. _Sphinx: http://www.sphinx-doc.org
 .. _Read the Docs: http://www.readthedocs.org
-.. _theme documentation: https://sphinx-rtd-theme.readthedocs.io/en/latest/
+.. _theme documentation: https://sphinx-rtd-theme.readthedocs.io/en/stable/
 
 Installation
 ============
@@ -40,11 +40,20 @@ your ``conf.py`` file's ``html_theme`` setting:
 
     html_theme = "sphinx_rtd_theme"
 
-For more information, including a full example with localized strings enabled,
-read the documentation on `installing the theme`_.
+.. seealso::
+    `Supported browsers`_
+        Officially supported and tested browser/operating system combinations
+
+    `Supported dependencies`_
+        Supported versions of Python, Sphinx, and other dependencies.
+
+    `Example documentation`_
+        A full example of this theme output, with localized strings enabled.
 
 .. _PyPI: https://pypi.python.org/pypi/sphinx_rtd_theme
-.. _installing the theme: https://sphinx-rtd-theme.readthedocs.io/en/latest/installing.html
+.. _Supported browsers: https://sphinx-rtd-theme.readthedocs.io/en/stable/development.html#supported-browsers
+.. _Supported dependencies: https://sphinx-rtd-theme.readthedocs.io/en/stable/development.html#supported-dependencies
+.. _Example documentation:  https://sphinx-rtd-theme.readthedocs.io/en/stable/
 
 Configuration
 =============
@@ -53,12 +62,12 @@ This theme is highly customizable on both the page level and on a global level.
 To see all the possible configuration options, read the documentation on
 `configuring the theme`_.
 
-.. _configuring the theme: https://sphinx-rtd-theme.readthedocs.io/en/latest/configuring.html
+.. _configuring the theme: https://sphinx-rtd-theme.readthedocs.io/en/stable/configuring.html
 
 Contributing
 ============
 
 If you would like to help modify or translate the theme, you'll find more
 information on contributing in our `contributing guide`_.
 
-.. _contributing guide: https://sphinx-rtd-theme.readthedocs.io/en/latest/contributing.html
+.. _contributing guide: https://sphinx-rtd-theme.readthedocs.io/en/stable/contributing.html