/**

• SendGrid Newsletter / WEB PHP API ...
• Copyright (C) 2011 Alon Ben David
• This program is free software: you can redistribute it and/or modify
• it under the terms of the GNU General Public License as published by
• the Free Software Foundation, either version 3 of the License, or
• (at your option) any later version.
• This program is distributed in the hope that it will be useful,
• but WITHOUT ANY WARRANTY; without even the implied warranty of
• MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
• GNU General Public License for more details.
• You should have received a copy of the GNU General Public License
• along with this program. If not, see http://www.gnu.org/licenses/gpl-3.0.txt.
• @author Alon Ben David - CoolGeex.com
• All the methods returns an array of data or one string / int
• If false returned you can run getLastResponseError() to see the error information
• If error information == NULL then no error accrued (like deleting a record returns 0 records deleted if no record found)

• CHECK sample-newsletter.php for list of methods, variables and code samples for the Newsletter API CHECK sample-web.php for list of methods, variables and code samples for the WEB API

• */