Use JSDoc 3
Use Travis CI
Ignore node_modules
Add JSDoc template

This is just the default template of JSDoc 3 with a different
page title. I'm checking it in because there is no way to change
the page title with the default template.
Update README
Bump into 1.1.2
Merge branch 'release-1.1.2'

This release brings nothing new other than documentation things.