Tweaked the contents of env variables, read more

NEWS_URI and AUTH_URI had the end of their routes lopped off, so I
could reference /admin using either one of them.

client/components/pages/homepage.jsx

@@ -6,7 +6,7 @@ const HomePage = props => {
 	return (
 		<div className='page'>
 			<p>This is the MERN template homepage.</p>
-			<NewsFeed uri={process.env.NEWS_URI} />
+			<NewsFeed />
 		</div>
 	);
 };