Set dms simulator can read from config file.

src/json/jsonobject.cpp

@@ -543,3 +543,9 @@ QStringList JsonObject::getScreenSaverInfomation()
 {
     return QString(getJsonString("screensaver", "content")).split(";");
 }
+
+
+bool JsonObject::isDmsSimulator()
+{
+    return getBool("dms","simulator");
+}

src/json/jsonobject.h

@@ -85,6 +85,7 @@ public:
 	void setInterfaceName(const QString& name);
 
 	bool isDHCP();
+    bool isDmsSimulator();
 	void autoDHCP(bool);
 
     bool getScanConfirm();