Removed environment variable suggestion

readme.md

@@ -20,7 +20,7 @@ The result will be faster and more lightweight than any other solution out there
 With [Now CLI](https://zeit.co/download), you can deploy an update server like this:
 
 ```bash
-now -e NODE_ENV="production" zeit/hazel
+now zeit/hazel
 ```
 
 You'll be asked for the value of two environment variables:
@@ -49,7 +49,6 @@ From now on, the auto updater will ask your Hazel deployment for updates!
 The following environment variables can be used optionally:
 
 - `INTERVAL`: Refreshes the cache every x minutes ([restrictions](https://developer.github.com/changes/2012-10-14-rate-limit-changes/))
-- `NODE_ENV`: Should always be "production", which ensures that only required dependencies are installed
 - `PRE`: When defined with a value of `1`, only pre-releases will be cached
 - `TOKEN`: Your GitHub token (for private repos)
 - `URL`: The server's URL (for private repos - when running on [Now](https://zeit.co/now), this field is filled with the URL of the deployment automatically)