Setting up the repo

A first proposal to set up the repository, following the latest from https://github.com/PK1A/hsp-hello-gulp
It is not optimal yet but it should cover most of what is needed to implement and publish these components.

@benouat At least you can write both, so if you don't like the inline export you can use your version. But in ES6 exports are done in a similar way i.e. `export function foo() {..}` so I guess this inline syntax will become a standard pattern in the future..