Added github star button

docs/source/_templates/ghbuttons.html

@@ -0,0 +1,4 @@
+<h3>Github</h3>
+<iframe src="http://ghbtns.com/github-btn.html?user=davidhalter&repo=jedi&type=watch&count=true&size=large"
+        frameborder="0" scrolling="0" width="170" height="30" allowtransparency="true"></iframe>
+<br><br>

docs/source/conf.py

@@ -141,7 +141,7 @@ html_static_path = ['_static']
 # Custom sidebar templates, maps document names to template names.
 html_sidebars = {
     '**': ['sidebarlogo.html', 'localtoc.html', 'relations.html',
-           'sourcelink.html', 'searchbox.html']
+           'ghbuttons.html', 'sourcelink.html', 'searchbox.html']
 }
 
 # Additional templates that should be rendered to pages, maps page names to