Coorected name of the option (deliveryTagInPayload)
Fixed some spelling mistakes and added backtick to make sample more readable
Client properties for the AMQP connection can now be extended from connection options
README now indicates how additional client properties can be set
Connection caters correctly when clientProperties are not supplied
Merge pull request #243 from mfloryan/readme-fixes

Readme fixes
Merge pull request #244 from mfloryan/client-properties

Client properties can be extended