changed travis to test only on master
Merge branch 'master' of https://github.com/Prototype-Group/generator-prototype
#31: added grunt-contrib-compass-spec.js
#31: added grunt-contrib-jshint-spec.js
#31: added grunt-csscomb-spec.js
#31: added grunt-devtools-spec.js
#31: added grunt-data-separator-spec.js