Merge pull request #47 from dwrensha/benchmark-include

add missing includes

c++/src/capnp/benchmark/common.h

@@ -37,6 +37,8 @@
 #include <stdexcept>
 #include <stdio.h>
 #include <string.h>
+#include <string>
+#include <vector>
 
 namespace capnp {
 namespace benchmark {