Fix "ReferenceError: Bob is not defined" for correct use of module.exports
Merge pull request #303 from Svyatov/patch-1

Fix "ReferenceError: Bob is not defined" for correct use of module.exports
js/robot-name module.exports
Test on Travis.
Fix approval broken by 87bd0d0.
Add Travis badge to README.

[ci skip]
Merge pull request #304 from splattael/travis

Test on Travis CI.
Add explicit email field on user
js/leap module.exports
js/etl module.exports
js/meetup module.exports
js/space-age module.exports
forgot to set skipped tests
add js/grains
js/gigasecond module.exports
js/triangle module.exports
js/scrabble-score module.exports
add new exercises to curriculum
typo in meetup spec
added popover on dashboard page to explain how to start work on a new assignment. also got rid of a stray console.log or two