First pass movement test

[slarson]

From @rgerkin

For the movement testing, we will just be wrapping the fine work shown in http://movement.openworm.org/ and https://github.com/openworm/open-worm-analysis-toolbox, which has really come a long way since I looked at it a few years ago. Based on the instructions, it looks like most of the hard work is already done, but if you want to give me any tips for wrapping this code up, let me know. I will probably contact someone working on this at some point before the end of this month.