Run benchmarks in Travis

[beepboopitschloe]

Travis is free for open-source projects, so there's no reason not to use it here. Plus we would get more repeatable results than "works on my machine."

[OvermindDL1]

As I mentioned at: #1 (comment)

And yeah, Travis would be good but do note that it is not consistent in speed, it depends on what else it is doing so you will not get reliable results. :-)

Perhaps it would be good to have a benchmark results directory with directories of the name of a github user with listed files of something simple, oh, JSON or so, that defines the computer specs and the results, that way it would be fairly trivial to go over and create charts over a range of runs on a range of computers?