Every install method should respect --skip-install flag

[SBoudrias]

ATM only installDependencies() accept a manually passed argument, but doesn't use the global flag.

Also, this doesn't match on documentation on the subject: http://yeoman.io/authoring/dependencies.html

Code wise this mean moving to skip install flag check into runInstall().

[hemanth]

That's like adding:

if (options.skipInstall) {
    return options.callback();
  }

or

if (!options.skipInstall) {
   // rest 
  }

here ?

[eddiemonge]

This is working a bit wonky on generator-webapp (gulp) when using it with composeWith as the target. Not sure if that generator-needs to be updated but it does install the version of this that has this fix. The this.options.skipInstall is false even though this.options['skip-install'] is true in the main generator and the composed generator-webapp.

[SBoudrias]

Currently I guess you need to pass it down the stack manually.

We probably should automatize the global level options being passed down.

[eddiemonge]

In the generators that I've seen, they use skip-install instead of 'skipInstall`. Switch to the dash version fixes it

[eddiemonge]

I don't actually see where it gets camelCased like that

[SBoudrias]

@eddiemonge it's done by meow on the yo side.