Update Widgets

Widgets.md

@@ -45,3 +45,21 @@ Quip::Widget::Button("Click me!", []() {
     std::cout << "Button has been clicked!" << std::endl;
 }, 10, 10)
 ```
+
+### `Quip::Widget::Image(std::string filepath, int xpos, int ypos, int width = -1, int height = -1)`
+
+#### Summary
+
+The `Image` widget renders an image given at a provided filepath. If width and height are values below 0, the image will be displayed at it's normal resolution.
+
+#### Members
+
+`int width, height`: The width and height of the image.
+
+`int xpos, ypos`: The xpos and ypos of the image.
+
+#### Example
+
+```c++
+Quip::Widget::Image("image.png", 10, 10, 100, 100);
+```