review issue: Automated tests

[andytwoods]

As per openjournals/joss-reviews#1044

Can you explicitly spell out how to run the tests. Ideally I could copy/paste.

[davekinkead]

Test instructions have been updated in 54844fa.

Try the following three commands from the project dir...

npm install
npm install --only=dev
npm test

The first installs production dependencies required to build the software. The second the dependencies to run the tests. The third to trigger the automated test suite.

None of this is required to actually use the software however.