When initializing an app, don't require bumping when publishing the first non-placeholder version

[jesseditson]

Right now, init does:

• create files
• build app
• upload an initial version

This means that the local version number is already used in the dev console, and to publish the first version that the user has changed, they'll need to bump.

Instead, we should upload a 0.0.0 (0) version as part of init, and allow publishing the 0.1.0 (1) version that the user starts with without bumping.