Added missing includes (iostream) for the tests

test/new-api/nodetests.cpp

@@ -1,5 +1,6 @@
 #include "nodetests.h"
 #include "yaml-cpp/yaml.h"
+#include <iostream>
 
 namespace {
 	struct TEST {

test/new-api/spectests.cpp

@@ -1,6 +1,7 @@
 #include "spectests.h"
 #include "specexamples.h"
 #include "yaml-cpp/yaml.h"
+#include <iostream>
 
 #define YAML_ASSERT(cond) do { if(!(cond)) return "  Assert failed: " #cond; } while(false)