title: How to setup a Postgres extension?
body: <p>In the latest release of Django (1.8), a few model fields have been added to take advantage of the Postgres data types. I am interested in <a href="https://docs.djangoproject.com/en/1.8/ref/contrib/postgres/fields/#hstorefield" rel="nofollow">HStoreField</a> and the documentation asks to setup a PG <a href="https://docs.djangoproject.com/en/1.8/ref/contrib/postgres/operations/#hstoreextension" rel="nofollow">extension</a> in order to use the new <code>HStoreField</code>s in the models.</p>
  
  <p><strong>How do I actually use this <code>HStoreExtension</code> class to perform the database extension?</strong></p>