Fixes main() return should be int in new examples

example/simplereader/simplereader.cpp

@@ -22,11 +22,13 @@ struct MyHandler {
 	bool EndArray(SizeType elementCount) { cout << "EndArray(" << elementCount << ")" << endl; return true; }
 };
 
-void main() {
+int main() {
     const char json[] = " { \"hello\" : \"world\", \"t\" : true , \"f\" : false, \"n\": null, \"i\":123, \"pi\": 3.1416, \"a\":[1, 2, 3, 4] } ";
 
     MyHandler handler;
     Reader reader;
     StringStream ss(json);
 	reader.Parse(ss, handler);
+
+	return 0;
 }

example/simplewriter/simplewriter.cpp

@@ -5,7 +5,7 @@
 using namespace rapidjson;
 using namespace std;
 
-void main() {
+int main() {
     StringBuffer s;
     Writer<StringBuffer> writer(s);
     
@@ -30,4 +30,6 @@ void main() {
     writer.EndObject();
 
     cout << s.GetString() << endl;
+
+	return 0;
 }