Add multiple <surfaces> tag test

example/bin/data/defaultSurfaces.xml

@@ -33,6 +33,8 @@
             <source-name>Custom FBO Source</source-name>
         </source>
     </surface>
+</surfaces>
+<surfaces>
     <surface type="1">
         <vertices>
             <vertex>
@@ -78,6 +80,8 @@
             <perspectiveWarping>1</perspectiveWarping>
         </properties>
     </surface>
+</surfaces>
+<surfaces>
     <surface type="2">
         <vertices>
             <vertex>

src/Application/SettingsLoader.cpp

@@ -39,6 +39,10 @@ bool SettingsLoader::load(SurfaceStack & surfaces, MediaServer & mediaServer, st
 		ofLogWarning("SettingsLoader::load()") << "XML settings is empty or has wrong markup";
 		return false;
 	}else{
+		// Count <surfaces> tags.
+		unsigned int numPresets = xmlSettings->getNumTags("surfaces");
+		cout << "numPresets: " << numPresets << endl;
+	
 		xmlSettings->pushTag("surfaces");
 
 		int numSurfaces = xmlSettings->getNumTags("surface");