Box Layout Tutorial

[anthonyirwin82]

• I agree that my contribution may be licensed either under MIT or any version of LGPL license.

This is a tutorial teaching users how to use the Gtk.Box widget to display multiple widgets at the same time.

It covers:

• Gtk.Box with vertical orientation
• Gtk.Box with horizontal orientation
• Creating both vertical and horizontal spacers to push widgets to the bottom of the window or the end (right) of the window and remain there when the window is resized
• Creating a Gtk.Button with both an icon and a label

[badcel]

Hey,
sorry for the delayed review. You did a pretty amazing job here 👍

I just found two simple typos. If those are fixed the tutorial is good to go 🚀

Please remember to amend your changes so your PR only has a single commit.

More PRs are welcome :-)