Merge branch 'release/0.6.0'
add the read_message method
update the code for the list cache
add the addDeliveries function
dont create a user for the message test"
add a test for the addDelivery
Merge pull request #2 from PunchTab/master

Add support for readMessage and addDelivery
Merge branch 'master' of github.com:Scotts-Marketplace/bronto-python into develop
Bumped version, added CHANGELOG
Merge branch 'release/0.7.0' into develop