updated readme so docs link points to index

README.md

@@ -2,7 +2,7 @@ FigureFirst is a python library to decorate and parse SVG files so they can serv
 
 See our github page for readme and examples: http://flyranch.github.io/figurefirst/
 
-Read the docs: http://figurefirst.readthedocs.io/en/latest/source/figurefirst.html#module-figurefirst
+Read the docs: https://figurefirst.readthedocs.io/en/latest/index.html
 
 Read our Scipy 2017 proceedings: http://conference.scipy.org/proceedings/scipy2017/lindsay.html