chore(travis): update `.travis.yml` file (set nodejs version to 7 and remove extra npm install)
chore(travis): update `.travis.yml` file (set nodejs version to 7 and remove extra npm install)

tinesoft/ng2-scrollreveal,tinesoft/ng2-scrollreveal,tinesoft/ng2-scrollreveal,tinesoft/ng-scrollreveal,tinesoft/ng-scrollreveal