Added configuration interface

mathmech/aboutwindow.h

@@ -0,0 +1,22 @@
+#ifndef ABOUTWINDOW_H
+#define ABOUTWINDOW_H
+
+#include <QMainWindow>
+
+namespace Ui {
+  class AboutWindow;
+}
+
+class AboutWindow : public QMainWindow
+{
+  Q_OBJECT
+  
+public:
+  explicit AboutWindow(QWidget *parent = 0);
+  ~AboutWindow();
+  
+private:
+  Ui::AboutWindow *ui;
+};
+
+#endif /* ABOUTWINDOW_H */