insertGalleryHere (iGH) was a goofy little project that would scan a given directory of images. This code is well over 2 years old and fairly unmaintained.
The whole project, as well as the source are avaiable online. Feel free to do with as you please. There is no warrantee with this, and quite frankly, I won’t be supporting it very much.
The only active use of this “plugin” is on pileofcrap.org. And this usage will end with the rewrite of pileofcrap.org. c’est la vie.