Bug Report or Feature Request (mark with an x)

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- [ ] feature request

Versions.

@angular/cli: 1.0.3
node: 6.9.2
os: win32 x64
@angular/cli: 1.0.3

Repro steps.

I am following the steps given in Angular Mobile guide to create new app with Angular CLI
https://mobile.angular.io/guides/

On executing: ng new hello-mobile --mobile
I get:

The option '--mobile' is not registered with the new command.

As a result, the angular app gets generated but without the files required for mobile development

The log given by the failure.

The option '--mobile' is not registered with the new command.

Desired functionality.

Expecting an angular app to be generated with files required for mobile development

Mention any other details that might be useful.