beautify bench

src/bench/Examples.cpp

@@ -2,9 +2,9 @@
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
-#include "bench.h"
-#include "main.h"
-#include "utiltime.h"
+#include <bench/bench.h>
+#include <main.h>
+#include <utiltime.h>
 
 // Sanity test: this should loop ten times, and
 // min/max/average should be close to 100ms.