adds nyc, splits test file, updates mocha, DEP0005

[jpw]

Hello! I've been doing some more tinkering 🙂

I was adding nyc locally to get a view on the code coverage before looking at the code in more detail, and thought I'd do a PR in case it's useful.

• adds nyc for code coverage. Not so informative ran against the built file, but nice i think?

• gitignore nyc output
• splits the test file in two, moving out the Writer tests with the long strings into a new file
• updated docs. I don't know why it changed file permissions on the fonts.
• in writer.js manages node DEP0005 warning for new Buffer(), which is a dangerous use of Buffer(). I went for the option that drops support for node < 6, am guessing that's not a problem for you.
• updates mocha to 6.2.0 (no special reason for that, but it seems to work fine)

[grimmdude]

Awesome, thanks @jpw looks great 👍.

I'd say for future PRs let's leave changes to /docs directory out of commits. Makes it easier to see what's actually changing. We can rebuild docs when version updates are released.

[jpw]

I'd say for future PRs let's leave changes to /docs directory out of commits.

Roger that, thanks @grimmdude 🙂