Add note that FB integration should be optional
Add note that FB integration should be optional

yahoo/end-to-end,yahoo/end-to-end,postfix/end-to-end,postfix/end-to-end,dconnolly/yahoo-end-to-end,yahoo/end-to-end,dconnolly/yahoo-end-to-end,yahoo/end-to-end,dconnolly/yahoo-end-to-end,postfix/end-to-end,dconnolly/yahoo-end-to-end,postfix/end-to-end