Uses the [`wdiff`](http://www.gnu.org/software/wdiff/) tool as a diffing engine. This produces an output that is more useful for copy-editing tasks. This wdiff comparison is then processed in a way that is aware of markdown formatting. The resulting output attempts to show differences of copy within the final document format (rather than differences of format).
- [How To Configure Virtual Memory (Swap File) on a VPS](https://www.digitalocean.com/community/tutorials/how-to-configure-virtual-memory-swap-file-on-a-vps#2)
To make the application start on boot, run the following:
pm2 start grunt --name dubdiff -- serve:dist
pm2 startup systemd
pm2 save
[Digital Ocean: How To Set Up a Node.js Application for Production on Ubuntu 16.04](https://www.digitalocean.com/community/tutorials/how-to-set-up-a-node-js-application-for-production-on-ubuntu-16-04)