better project structure

framework/include/hello.h

@@ -0,0 +1,10 @@
+#ifndef GL_TEMPLATE_HELLO_H
+#define GL_TEMPLATE_HELLO_H
+
+#include <string>
+
+void hello();
+
+int showWindow(const std::string &title);
+
+#endif //GL_TEMPLATE_HELLO_H