title: The local psql command could not be located
body: <p>I'm following the instructions found <a href="https://devcenter.heroku.com/articles/heroku-postgresql#provisioning-the-addon" rel="noreferrer">here.</a> 
  When I try to run <code>$ heroku pg:psql</code> or <code>$ heroku pg:psql HEROKU POSTGRESQL_BROWN</code> I recieve the following error message:</p>
  
  <blockquote>
    <p>!    The local psql command could not be located  !    For help
    installing psql, see <a href="http://devcenter.heroku.com/articles/local-postgresql" rel="noreferrer">local-postgresql</a></p>
  </blockquote>
  
  <p>I can't find anything useful on the link it gives me (it just links to the instructions I was already using, but further down the page) nor can I find this error anywhere else.</p>
  
  <p>If I've missed anything you need to know to answer this, just let me know. I'm rather new to all this and teaching myself as I go.</p>