v0.2.0

Installation:

npm i git://github.com/Icehunter/rabbitmq-helper.git#v0.2.0 -S

Changes:

• Added joi validation to incoming config.
• Changed params of initializer to have logger included in object.
• Each use of helper now creates an entirely new and unique copy of
  class while maintaining cached functions.
• Updated unit tests.
• Incremented minor.