added more App functions

src/App.h

@@ -15,13 +15,19 @@ class App {
         std::vector<Module*> modules;
 
     public:
-        App();
+        App(const int&, char*[]);
         ~App();
 
         static App& Get() { return *instance; }
 
         void run();
 
+        void load(std::string);
+
+        void handleArgs(const int&, char*[]);
+
+        void printHelp();
+
         void end() { done = true; };
 };