Adding voyage toolbar button: Rated 5 out of 5 stars

- install Custom Buttons add-on
- right click on toolbar/Add new button
- fill the form
name: voyage
code: gBrowser.selectedTab = gBrowser.addTab("about:voyage");
image: {your profile path}/extensions/voyage@littleb.tc/chrome/logo.png

This review is for a previous version of the add-on (0.5).