Support generating model properties

[ianpartridge]

Currently, kitura create runs the app generator, and kitura create <model> runs the model subgenerator.

We should add support for running the property subgenerator, and as a consequence rework the parameters that kitura create supports.

Proposal:

kitura create - run the app generator (no change)

kitura create <name> - run the app generator specifying a project name

kitura create --model [name] - run the model subgenerator optionally specifying a model name

kitura create --property - run the property subgenerator

[ianpartridge]

@tunniclm does this accurately reflect what we discussed?

[tunniclm]

Yes, are you planning on supporting passing down options as well so someone could do kitura create --skip-build?

[ianpartridge]

Yes. kitura init now supports options so you can do kitura init --skip-build (that's what the test does). I'll add this to kitura create as well.

[ianpartridge]

Fixed in #14