artifactory 3.3.1 (new formula)

Artifactory Open Source Binary repository by JFrog.com
Optimizing formula due to review response.

- Changing quotation to single quotes as default. Double quotes only if
  String manipulation is needed.
- Removed caveats.
- Changed indentation of plist entry.
Testing artifactory output
Wrong indentation
artifactory: add 3.3.1 bottle.