Added documentation about missing RabbitMQ functionality
Added documentation about missing RabbitMQ functionality

CopernicaMarketingSoftware/AMQP-CPP,toolking/AMQP-CPP,toolking/AMQP-CPP,CopernicaMarketingSoftware/AMQP-CPP,fantastory/AMQP-CPP,fantastory/AMQP-CPP