What is an "integration script" and why would I want one?
An integration script is a JavaScript browser extension that facilitates integration of a specific web application with Unity via the WebApps feature introduced in Ubuntu 12.10.
This prompt is generated by the Unity Desktop Integration browser extension when a package providing an integration script is available in Ubuntu's repositories but is not installed. The prompt's wording will likely be improved in the future.
See also:
- How do I use Ubuntu's web application integration?
- How do I remove a website from Ubuntu's web applications?