Removed performance folder
Merge pull request #347 from nicolaasmatthijs/issue346

Removed performance folder
Update README.md
Update README.md
Update README.md
Merge pull request #348 from bp323/readme

Update README.md
Increase wait times for tests.
Add validator to getDirectRoles
Clean up
Merge branch 'master' into previews

* master:
  Clean up
  Add validator to getDirectRoles
  Increase wait times for tests.
  Update README.md
  Update README.md
  Update README.md
  Removed performance folder
Simplified and corrected createRollingSignature
Added lastModified to the content previews signature
Moved getThumbnail to a utility method.