add attribution to dist file

Author: callmecavs

dist/jump.min.js

@@ -4,6 +4,7 @@ import babelify from 'babelify'
 import browserify from 'browserify'
 import gulp from 'gulp'
 import connect from 'gulp-connect'
+import header from 'gulp-header'
 import sourcemaps from 'gulp-sourcemaps'
 import uglify from 'gulp-uglify'
 import assign from 'lodash.assign'
@@ -24,11 +25,9 @@ const onError = (error) => {
 const attribution = [
   '/*!',
   ' * Jump.js <%= pkg.version %> - <%= pkg.description %>',
-  ' * Copyright (c) 2015 <%= pkg.author %> - https://github.com/callmecavs/jump.js',
+  ' * Copyright (c) ' + new Date().getFullYear() + ' <%= pkg.author %> - <%= pkg.homepage %>',
   ' * License: <%= pkg.license %>',
-  ' */',
-  '',
-  ''
+  ' */'
 ].join('\n')
 
 // JS
@@ -57,7 +56,8 @@ const build = () => {
     .pipe(source('jump.min.js'))
     .pipe(buffer())
     .pipe(sourcemaps.init({ loadMaps: true }))
-    .pipe(uglify())
+    .pipe(header(attribution, { pkg: packageJSON }))
+    .pipe(uglify({ preserveComments: 'some' }))
     .pipe(sourcemaps.write('./maps', { addComment: false }))
     .pipe(gulp.dest('dist'))
     .pipe(connect.reload())

gulpfile.babel.js

@@ -1,6 +1,6 @@
 {
   "name":        "jump.js",
-  "version":     "0.1.1",
+  "version":     "0.1.2",
   "description": "A small, modern, dependency-free smooth scrolling library.",
   "homepage":    "https://github.com/callmecavs/jump.js",
   "main":        "dist/jump.min.js",
@@ -28,6 +28,7 @@
     "browserify":                      "*",
     "gulp":                            "*",
     "gulp-connect":                    "*",
+    "gulp-header":                     "*",
     "gulp-sourcemaps":                 "*",
     "gulp-uglify":                     "*",
     "lodash.assign":                   "*",