* Run mocha test with module alias
* Running test with babel module alias
* Fix model alias
* Fix model alias
* Resolve module alias
* Running test with babel module alias
* Connect to codecov
* add codecov to travis
* stop if yarn test has errors
* Still cannot collect data from slate modules
* Try to check whether it works with codecov
* Move config to nycrc
* Remove nyc require
* Update nyc to use src
* better before_script
