Gulp Task for rollup.js

Rollup.js the next-generation JavaScript module bundler allows you to bundle your JavaScript dependencies. In addition, it offers tree-shaking. Tree-shaking?

Normally if you require a module, you import the whole thing. ES2015 lets you just import the bits you need, without mucking around with custom builds. - rollupjs.org

Rollup.js comes with plug-ins, Bublé for example, allows you to compile code from ES6 to ES5.

Getting started

1. run npm install from root directory, this will install following dependencies:
2. gulp, JavaScript task runner
3. rollup, JavaScript bundler
4. rollup-plugin-buble, JavaScript compiler plug-in
5. Compiling code can be accomplished in two ways, by typing:
6. gulp, will use Gulpfile.js and run default Gulp task
7. npm run rollup, will use rollup.config.js and run compiling process via terminal