Challenge 11 - Tool Pane Basics

Version 1

    1. Create files for a custom tool pane named helloworld
    2. Display a button on the tool pane
    3. On a click of the button alert a popup message “Hello, world”

    Extra Credit:
    Create a tool pane that allows you to navigate to other displays.

    Note: This one covers a lot of topics that are out of the scope of this course.  Feel free to just skip right to the solution if you're stuck!