Use a class instead of a global Camomile object

[rom1504]

I think it would be better and would be closer to the python API https://github.com/camomile-project/camomile-client-python/blob/master/camomile/client.py#L149

Something like var client = new Camomile('http://camomile.fr/api');

[hbredin]

Yes. Definitely. Feel free to contribute this change!

[hbredin]

Even better if multiple clients can be instantiated at once. This could allow two things:

• log in with 2 different users (e.g. one with and one without admin privileges)
• log in to 2 different servers (e.g. to transfer annotations from one server to another).

[rom1504]

Ok I'm doing that. I'm wondering if I can use ES6 ? It has better syntax for classes. There are 2 possibilities to use es6 :

• add transpilers tools in the project (babel) : keep retrocompatibility with old browsers versions that don't support es6. But it means npm install will take a bit more time (for devs, not for users)
• just not support older browsers : are users using older browsers ?

[hbredin]

I don't mind getting rid of old browsers.

[rom1504]

done by #9