Provide page description

Author: wimpyprogrammer

demo/index.html

@@ -5,7 +5,7 @@
 	<meta charset="utf-8">
 	<meta http-equiv="x-ua-compatible" content="ie=edge">
 	<title>Regular Expression Pattern Creator</title>
-	<meta name="description" content="">
+	<meta name="description" content="A tool to generate a concise Regular Expression matching given words/phrases.">
 	<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
 
 	<!-- Google Tag Manager -->