fix(ci): Update Travis CI script so greenkeeper works with the lockfile
fix(ci): Update Travis CI script so greenkeeper works with the lockfile

davidmsibley/angularjs-portal,UW-Madison-DoIT/angularjs-portal,davidmsibley/angularjs-portal,UW-Madison-DoIT/angularjs-portal,davidmsibley/angularjs-portal,UW-Madison-DoIT/angularjs-portal,UW-Madison-DoIT/angularjs-portal,davidmsibley/angularjs-portal