Refactor controller add feed

app/Exceptions/FeedNotAddedException.php

@@ -0,0 +1,14 @@
+<?php
+
+class FreshRSS_FeedNotAdded_Exception extends Exception {
+	private $feedName = '';
+
+	public function __construct($url, $feedName) {
+		parent::__construct('Feed not added! ' . $url, 2147);
+		$this->$feedName = $feedName;
+	}
+
+	public function feedName() {
+		return $this->feedName();
+	}
+}