Update licenses plugin for gulp.
Install this package with npm and add it to your development dependencies:
npm install --save-dev gulp-licenser
var licenser = require('gulp-licenser');
var LICENSE_TEMPLATE =
'/**\n\
* Package v1.0.0\n\
*\
* Copyright 2015, Company.\n\
* All rights reserved.\n\
*\
*/';
gulp.task('updateLicense', function() {
gulp.src('./src/*.js')
.pipe(licenser(LICENSE_TEMPLATE))
.pipe(gulp.dest('./src/'))
});