code: function Auth(clientId, clientSecret)
  {
  	if (!(this instanceof Auth))
  		return new Auth(clientId, clientSecret);
  	
  	this.clientId = clientId;
  	this.clientSecret = clientSecret;
  	
  	if (!this.clientId || !this.clientSecret)
  		throw new Error('No Client ID / Client Secret provided!');
  }
docs: The constructor for the authentication to a nello.
  
  @class Auth
  @param {String}  		  clientId			Client ID used for authentication
  @param {String}  		  clientSecret		Client Secret used for authentication
  @returns {Auth}
  @constructor
  @see https://nelloauth.docs.apiary.io/#reference/0/token/create-a-new-token-client-credentials