add basic example

examples/basic/window.cpp

@@ -0,0 +1,27 @@
+#include "window.h"
+
+
+
+Window::Window(int x, int y, const char* title)
+{
+	GLFWwindow* window = glfwCreateWindow(x, y, title, NULL, NULL);
+	this->window = window;
+}
+
+
+Window::~Window()
+{
+	glfwDestroyWindow(this->window);
+}
+
+void Window::Resize() 
+{
+	GLint w, h;
+	glfwGetWindowSize(this->window, &w, &h);
+	glViewport(0, 0, w, h);
+}
+
+int Window::Close()
+{
+	return glfwWindowShouldClose(this->window);
+}