Add Tests

[JRJurman]

Summary

It would be cool to have tests that verify tram-one-express works as intended using jest.

Checklist

• verify default project name
• verify custom project name
• verify files are created
• verify that files replace %TITLE% with project name
• verify that start, build, and test script work as expected for the generated project

[JRJurman]

• verify that start, build, and test script work as expected for the generated project

Completed with work for CircleCI tests

The other tests should be unit tests (this potentially requires breaking much of the logic up into testable chunks)