Update user_agents.php

Add detection for Opera 16
diff --git a/application/config/user_agents.php b/application/config/user_agents.php
index 5887a15..9177f3e 100644
--- a/application/config/user_agents.php
+++ b/application/config/user_agents.php
@@ -81,6 +81,7 @@
 // The order of this array should NOT be changed. Many browsers return
 // multiple browser types so we want to identify the sub-type first.
 $browsers = array(
+	'OPR'			=> 'Opera',
 	'Flock'			=> 'Flock',
 	'Chrome'		=> 'Chrome',
 	'Opera'			=> 'Opera',
@@ -222,4 +223,4 @@
 );
 
 /* End of file user_agents.php */
-/* Location: ./application/config/user_agents.php */
\ No newline at end of file
+/* Location: ./application/config/user_agents.php */