create-react-microservice command strips numeric values from npm org

[Dabolus]

Describe the problem:

create-react-microservice strips numeric values from npm orgs, which are actually legal in org names.

Steps to reproduce:

1. Run create-react-microservice my-project
2. Set an org name with some numeric values (e.g. test39)

Observed Results:

• What happened? This could be a description, log output, etc.

The org scope will be set to @test/

Expected Results:

• What did you expect to happen?

Numeric values should be preserved, so the org scope should be set to @test39/