1. Open http://app.kanbana.com in safari
2. Two finger tap/right tap on the background and choose "Remove this application"
3. Clear browser history by choosing History -> Clear History
4. Reload http://app.kanbana.com in safari
5. Right click or two finger tap on the background
6. Choose "Install Kanbana onto this computer"
7. Open Finder and goto your downloads folder and drag Kanbana into your Applications folder