Angular.io is currently the preview site for Angular 2. This site also includes links to other helpful angular resources including Angular 1, Angular Material, and AngularFire.
If you are only going to work on a specific part of the docs, such as the API or dev guide, then you can use one of the more specific gulp tasks to only watch those parts of the file system:
*`serve-and-sync` : watch all the local Jade/Sass files, the API source and examples, and the dev guide files
*`serve-and-sync-api-docs` : watch only the API source and example files
*`serve-and-sync-devGuide` : watch only the dev guide files
*`build-and-serve` : watch only the local Jade/Sass files