Add back export PATH=/usr/local/share/python:$PATH section

Author: JeffPaine

docs/starting/install/osx.rst

@@ -56,6 +56,13 @@ Now, we can install Python 2.7: ::
 
     $ brew install python
 
+This will take a minute or two. Once that's complete, you'll have to add the
+new Python scripts directory to your ``PATH``
+
+.. code-block:: console
+
+    export PATH=/usr/local/share/python:$PATH
+
 
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