We reported on this tool just a couple of days go. Winocm was working on this project and mentioned there would be a tool to allow people to try it for themselves. All you need to get started has now been released to Github. This is not one of those iOS hacks that everyone should try. You should probably know a thing or two about iOS hacking to get started. Here is what the author had to say about it:
A miscellany of utilities designed to help you bootstrap
another operating system on an iOS device. They’re probably crap. You deal with them. No support/warranty implied/given.
You deal with them. No support/warranty implied/given.
You will need to use image3 file maker, iBSSS patcher for iOS 7, Image loader for the kernel, and a multi-image loader to pull this off. All the source is provided to get you started. If you are planning to try something like this, you may as well use a spare device just in case. We would love to hear from you when you get results.