DOC: doc tweaks

 - Change main heading
 - add table of links

closes #24

Author: tacaswell

doc/source/index.rst

@@ -1,14 +1,22 @@
 .. currentmodule:: cycler
 
-====================
- Style/kwarg cycler
-====================
+===================
+ Composable cycles
+===================
 
 .. htmlonly::
 
-    :Release: |version|
+    :Version: |version|
     :Date: |today|
 
+
+====== ====================================
+docs   http://matplotlib.org/cycler
+pypi   https://pypi.python.org/pypi/Cycler
+github https://github.com/matplotlib/cycler
+====== ====================================
+
+
 :py:mod:`cycler` API
 ====================