update TokenInterface
add shortcut connect methods
Merge pull request #4 from iampersistent/master

updates and features
add createToken method to Workflow
allow errors to be set in workflow
Merge pull request #5 from iampersistent/master

add createToken method to Workflow
allow no outputs in tokenable finalize
add ProcessingFailureException
add test for handling ProcessFailureException
implement handling ProcessingFailureException
only remove token when it is to move to the next node
have the success results bubble up
adjust test to match changes in behavior
Merge pull request #6 from iampersistent/master

have the success results bubble up
add response bubbling to Automatic
Merge pull request #7 from iampersistent/master

add response bubbling to Automatic