Migrate from Grunt.js to Gulp.js #35

After installation of the project (npm install) you must run "npm
install --global gulp" (see here:
https://github.com/gulpjs/gulp/blob/master/docs/getting-started.md)
(should be documented)
Merge pull request #2 from adibiton/master

Migrate from Grunt.js to Gulp.js #35