Thought I would share this yawl. The link is from From Cult of Mac and provides a detailed look how to Sync Lightroom to Dropbox. I tested it and it works great.
Link to to Article
http://www.cultofmac.com/224534/sync-your-lightroom-across-all-your-macs-with-dropbox-how-to/
Link to to Article
http://www.cultofmac.com/224534/sync-your-lightroom-across-all-your-macs-with-dropbox-how-to/