Add package.json to with-zones example, make create-next-app work (vercel#8453)

* Add package.json to with-zones example

So that create-next-app works.

* Update README – no need to run `yarn` / `npm i`

This example doesn't have any dependencies in its package.json,
everything is handled by running `now dev`.

Author: borekb

examples/with-zones/README.md

@@ -21,14 +21,6 @@ curl https://codeload.github.com/zeit/next.js/tar.gz/canary | tar -xz --strip=2
 cd with-zones
 ```
 
-Install it and run:
-
-```bash
-npm install
-# or
-yarn
-```
-
 ## The idea behind this example
 
 With Next.js you can use multiple apps as a single app using it's multi-zones feature.

examples/with-zones/package.json

@@ -0,0 +1,4 @@
+{
+  "name": "with-zones-example",
+  "private": true
+}