Example: Add logout confirmation

[brandonroberts]

Describe any alternatives/workarounds you're currently using

Other information:

If accepted, I would be willing to submit a PR for this feature

[ ] Yes (Assistance is provided if you need help submitting a pull request)
[ ] No

Show how you would handle a confirmation prompt using an Actions and Effects with an Angular Material dialog when the user clicks Sign Out.

[koumatsumoto]

Could I take over this issue?

[timdeschryver]

Go for it!