I fixed few things that prevented the app from building on sdk 2.0, and added some builder hints in README file (it's in the root of ujifgc/badassh repo on github).
Now it builds and runs fine on my device, but I can't get to debugging because the IDE keeps labeling my breakpoints with 'unresolved breakpoint' complain.
Known bugs with 2.0 are: not saving configuration settings (host, port, username) and not saving RSA2 keys. Something to do with app storage, I think.
If you got putty.ppk file, the app can use it from /Phone/Other/putty.ppk