Kali 2 has Dradis 3.0 already, and they have Dradis 3.0 packages on the main site. However, this is the RC3 release in which you can't export anything or you get errors.
They've been recommending doing an install from git since October 2015, which is apparently a "fixed" version, but for me it actually caused more problems with all of the ruby dependencies required and I gave up. I keep checking back to see if there's an RC4 or a 3.0 final package.
Seems like 100% of effort is going into Dradis Pro since they make money off of it. However, I can't use Pro where I work because the systems I wanted to use Dradis on are airgapped from the internet, and from what I gathered, Pro is a cloud-based subscription model. It's unfortunate, really - I can't find anything else quite like it, and I just can't get it to work.
Note: If a dev reads this, a "trash bin" for deleted items would be awesome. A guy accidentally clicked delete on something he put a bunch of info into and it was gone forever