Better Performance Docs

[adamcooper86]

I am trying to better understand some performance issues with an app and went looking for documentation on how to read/interpret what I am seeing on the performance tab in batarang's extension and couldn't find any. I would have imagined it would have been in the readme, or atleast linked from the readme.

[SomeKittens]

You can watch my talk on the topic, which is about the best docs for perf we've got: https://www.youtube.com/embed/uS7iHR6topY?t=2m28s