Added link for modindex

The documentation build does not generate any module index, therefore
modified setup.cfg to create module index. The page
http://docs.openstack.org/developer/python-magnumclient/py-modindex.html
contains module index.

Change-Id: I950b21f1946850e572f6ea19637ba439460bb3ec

doc/source/conf.py

@@ -50,6 +50,9 @@ add_module_names = True
 # The name of the Pygments (syntax highlighting) style to use.
 pygments_style = 'sphinx'
 
+# A list of ignored prefixes for module index sorting.
+modindex_common_prefix = ['magnumclient.']
+
 # -- Options for HTML output --------------------------------------------------
 
 # The theme to use for HTML and HTML Help pages.  Major themes that come with

setup.cfg

@@ -56,3 +56,7 @@ output_file = magnumclient/locale/magnumclient.pot
 
 [wheel]
 universal = 1
+
+[pbr]
+autodoc_index_modules = True
+warnerrors = True