Added .ico mime type

Just added ico to mime list
diff --git a/application/config/mimes.php b/application/config/mimes.php
index 78d8e53..f9b74bf 100644
--- a/application/config/mimes.php
+++ b/application/config/mimes.php
@@ -154,5 +154,6 @@
 	'svg'	=>	array('image/svg+xml', 'application/xml', 'text/xml'),
 	'vcf'	=>	'text/x-vcard',
 	'srt'	=>	array('text/srt', 'text/plain'),
-	'vtt'	=>	array('text/vtt', 'text/plain')
+	'vtt'	=>	array('text/vtt', 'text/plain'),
+	'ico'	=>	'image/x-icon'
 );