Change --name behavior

[lukeed]

Do you want to request a feature or report a bug?

Feature / Fix

What is the current behavior?

The --name flag does nothing & is described to do 2 different things:

• 'Package name for the app' here

• 'directory and package name for the new app' here

What is the expected behavior?

The --name flag should set the name of the generated app inside package.json and the manifest.json.

It should not worry about the dest/directory name, since that's what --dest is for.