vnext default: CLI Change #3749
Description
As part of making vnext the default:
Because we will start publishing vnext with "latest" npm tag, the CLI will start creating a vnext app by default. We'll want a way for users to discover how to create an app based on older versions.
Proposed solution: The CLI will continue to support the --template parameter, and will also prompt the user if no parameter is supplied. The prompt will allow the developer to choose which tag to create an app from, where the developer can choose between legacy and latest.