add travis support

build tasks:

- [ ] linter (depends on #8) ideally auto-format, or if not then fail on a bad lint.
- [ ] check the project builds
- [ ] set up cypress #10
- [ ] automatically deploy built jsdocs to gh-pages

## if you want to pick up this task

1. Comment on this issue stating that you intend to work on the task
2. When you're ready, add your work to the repo and create a pull request.

### What to do if you need help

Mention @yochannah, tweet [@yoyehudi](http://www.twitter.com/yoyehudi), pop by to say hi on [chat](http://chat.intermine.org) or if needed email yo@intermine.org <3