Merge pull request #38 from Nike-Inc/devel

Release 1.6

Update minor/patch versions to match release.

Point users to GH Releases instead of this changelog file

Merge pull request #28 from Nike-Inc/devel

Add support for downloading artifacts, deleting jobs, and installing bartlett from homebrew

Update secure token for deployments

Update secure token for deployments

Update secure token for deployments

Refactor numbered list to bulleted list in motivations section

Update README to remove CSRF restriction message

Merge pull request #21 from bjaress/optional-auth

Make username and password optional.