Adds datalad's terminal cast routine - allows interactive nipype intro

[miykael]

@mih showed me datalad's very cool cast tool. I've changed it a little so that it works with ipython. @djarecka, @satra and @chrisfilo, if you don't know it yet, I highly recommend you to try it out.

Just download the three files in nipype_tutorial/casts and run it with the following command (careful, I have currently a rm -rf ~/demo command in there):

./cast_live_python nipype_tutorial_showcase.sh

I find it really cool and it forces me to keep a nice slow speed while introducing people to nipype.

Note: Under the datalad repo, you can also find good bash examples. casts should eventually be put into a separate repo/project (see datalad/datalad#1778), but for now it's all in the datalad repo.

[chrisgorgo]

Sounds interesting - is it intended to be run inside docker or jupyterlab?

[miykael]

@chrisfilo - It's intend to be run from the terminal. The idea is that you have two terminals open (one for viewing/live demo and one in which you control what will be shown next in the viewing terminal. I don't think that it would work inside docker as it would need to open an additional terminal.

And cast_live is only one of many possible applications. Under datalad/tools, there are also cast2rst and cast2script (for the obvious purpose), as well as cast2asciinema, with which videos like this were created.