Merge pull request #231 from teharrison/master

change defaults to save task stdout/stderr
support data token for downloading prerequiste data
Merge pull request #232 from wtangiit/master

support data token for downloading prerequiste data
auth header key is now Authorization (from Datatoken)
removed console.log
Merge pull request #233 from paczian/master

changed authorization header
Update README.md
Update README.md