title: How do I have the cli add an e2e folder for my app?
body: <p>I would like to do end-to-end testing with my Angular5/ionic3 app but I notice there is no e2e folder in it.  What do I need to do to use the <code>cli</code> to generate a <code>e2e</code> folder so I can begin writing my <code>e2e</code> tests?</p>