Updated syntax in example to use nested 'then' syntax for 'repeat','delay', and 'after'
Added ability to use a sequence as a response body
Added ability to define workflow in initObj as sequence array, instead of defining sequence separately. Fixed bug where pubsub methods were overwriting methods in Turbine itself instead of just in the pubsub object.
Added ability to define 'then' as a sequence.
Recursively replace all @next when 'then' is a sequence with next step in sequence
Fixed bug where repeat wasn't working for nested actions
Updated README with docs on new features:
* Sequence workflows
* Nested 'then' actions
* 'then' sequences
* @next shortcuts
* Nested 'then' in repeat, timeout, and delay
Merge branch 'develop' of github.com:wmbenedetto/turbine.js into develop

* 'develop' of github.com:wmbenedetto/turbine.js:
  Update README.md
Changed copyright date