add yaml-cpp

src/main.cpp

@@ -2,6 +2,7 @@
 #include <QApplication>
 
 #include "ui/MainWindow.h"
+#include "ConfigInterface.h"
 
 #include <iostream>
 
@@ -9,12 +10,14 @@ int main(int argc, char *argv[]) {
 
     // std::cout << "Main()" << std::endl;
 
+    ConfigInterface config = ConfigInterface();
+
     QApplication app(argc, argv);
 
     MainWindow window; // entry point goes to MainWindow::MainWindow()
     window.show();
     
-    int status = app.exec(); // assembles ui
+    int status = app.exec(); // app execution; blocks until window close
 
     return status;
 }