code: function del(uuid, callback) {
    if(!util.isFunction(callback)) {
      throw new Error('callback must be a function');
    }
  
    var resource = this.coinjar.personal.api_endpoint +
      '/v1/contacts/' +
      uuid +
      '.json';
  
    request.del(resource)
      .auth(this.coinjar.personal.auth_token)
      .end(function (response) {
        if(response.error) {
          return callback(new Error('Coinjar personal contacts api returned error: ' + response.error));
        }
        return callback(null, response.statusCode);
      });
  }
docs: @name del
  @description
  Remove an existing contact.
  
  @params {String} uuid
  @params {Function} callback