Split gulpfile.js into separate task files.

gulp/tasks/dist.js

@@ -0,0 +1,31 @@
+/*
+ * Paper.js - The Swiss Army Knife of Vector Graphics Scripting.
+ * http://paperjs.org/
+ *
+ * Copyright (c) 2011 - 2016, Juerg Lehni & Jonathan Puckey
+ * http://scratchdisk.com/ & http://jonathanpuckey.com/
+ *
+ * Distributed under the MIT license. See LICENSE file for details.
+ *
+ * All rights reserved.
+ */
+
+var gulp = require('gulp'),
+    merge = require('merge-stream'),
+    zip = require('gulp-zip');
+
+gulp.task('dist', ['minify', 'docs'], function() {
+    return merge(
+            gulp.src([
+                'dist/paper-full*.js',
+                'dist/paper-core*.js',
+                'LICENSE.txt',
+                'examples/**/*',
+            ], { base: '.' }),
+            gulp.src([
+                'dist/docs/**/*'
+            ], { base: 'dist' })
+        )
+        .pipe(zip('/paperjs.zip'))
+        .pipe(gulp.dest('dist'));
+});