To install and run ZAT
gem update zendesk_apps_tools
zat theme preview
Domain: portify
Username: your Zendesk username + the word '/token' eg. jdoe@example.com/token
Password: Zendesk API token
example:
Enter your username: jdoe@example.com/token
Enter your password: e8Pvy0pvGzE8meUQxWgjIYkjr