Here are my slides for Automating Front-end Performance with Grunt that I gave at devObjective Conf 2015. I'll likely write it up, to give a transcript. I think I have the only recording of the talk. I gave it while sick, having had a fever on the day of and the day before (and the day after, it turns out), so it wasn't the best talk I've ever given, but I did enjoy it. devObjective is a fun conference with very approachable people both running it and attending it.