Add default CDN

[rauchg]

Per FAQ:

We intend for Next.js to be a great starting point for any website or app, no matter how small.

If you’re building a very small mostly-content website, you still want to benefit from features like lazy-loading, a component architecture and module bundling.

But in some cases, the size of React itself would far exceed the content of the page!

For this reason we want to promote a situation where users can share the cache for the basic runtime across internet properties. The application code continues to load from your server as usual.

We are committed to providing a great uptime and levels of security for our CDN. Even so, we also automatically fall back if the CDN script fails to load with a simple trick.

To turn the CDN off, just set { “next”: { “cdn”: false } } in package.json.

[nkzawa]

Do we use https://cdn.zeit.co ?

[rauchg]

@nkzawa yep, since we already have the pipeline in place