Sorry for the cross post, but I thought that this would fit here too.
I have just updated the multifile gist example with my own:
Save that as "gist" and add the following bookmarklet called "Get Gist" to safari:
Now, whenever you are looking at a gist script that you want to try in Pythonista, just click the bookmarklet and it will instantly download and display the code for you. Enjoy!