changed stile of returning values to be an array of object with argument error and data

Signed-off-by: Pascal Pflaum <pascal@heutewirdnichtmehrgearbeitet.de>
Merge branch 'master' of https://github.com/PascalPflaum/functionFlow

Conflicts:
	index.js
	test/test/indexTest.js
Added alternative deferred interface for using flow.done