Ensure trailing slash on $TMPDIR
Run ImageOptim in CLI mode instead of AppleScript
Fix minor formatting issues in Terminal output.
JPEGmini opening but not selecting files, fixes #60.
Merge branch 'unfold-mavericks-early-exit' into develop

* unfold-mavericks-early-exit:
  JPEGmini opening but not selecting files, fixes #60.
  Fix minor formatting issues in Terminal output.
  Run ImageOptim in CLI mode instead of AppleScript
Exit if --directory is invalid.
Recognise JPEGmini Lite, fixes #41.
Revert change in Pull Request #62.

"Permission denied" and "Directory not empty" errors.
1.7.9