add installing notice and refresh

public/src/installer/install.js

@@ -16,6 +16,11 @@ $('document').ready(function () {
 
 	$('#launch').on('click', launchForum);
 
+	if ($('#installing').length) {
+		setTimeout(function () {
+			window.location.reload(true);
+		}, 5000);
+	}
 
 	function setupInputs() {
 		$('form').on('focus', '.form-control', function () {

src/views/install/index.tpl

@@ -115,6 +115,13 @@
 		</form>
 	</div>
 
+	<!-- IF installing -->
+	<div id="installing" class="container">
+		<p>
+			<h1>Hang tight! Your NodeBB is being installed.</h1>
+		</p>
+	</div>
+	<!-- ENDIF installing -->
 
 	<div class="container <!-- IF !success -->hide<!-- ENDIF !success -->">
 		<p>