Contracting JavaScript snippets

What's the big deal?

- Contraction of snippets;
- Adding some [Airbnb Syntax Specifications](https://github.com/airbnb/javascript)
there is lots of different styleguides out there for Javascript, and all of them are valid. The rule when contributing to a project is to respect the coding standard of this project, not to try to enforce the styleguide you use yourselves