Test that JsonArray can store integers

srcs/JsonArray.cpp

@@ -1,2 +1,14 @@
 #include "JsonArray.h"
 
+#include "JsonValue.h"
+
+JsonValue JsonArray::operator[](int index) const
+{
+    for (JsonNodeIterator it = beginChildren(); it != endChildren(); ++it)
+    {
+        if (!index) return JsonValue(*it);
+        index--;
+    }
+
+    return JsonValue();
+}