Fix link in README.md

Author: matthewearl

README.md

@@ -1,6 +1,5 @@
-This is the code behind the Switching Eds blog post:
+This is the code behind the [Switching Eds blog post](http://
+matthewearl.github.io/2015/07/28/switching-eds-with-python/).
 
-    http://matthewearl.github.io/2015/07/28/switching-eds-with-python/
-
-See the above for an explanation of the code.
+See the link for an explanation of the code.