As code.google.com will/has been shut down, there is a mirror for the files on bintray: https://bintray.com/aborg0/HiTS/hits/view#files
In case you want to try a temporary version which works with KNIME 3.1, you can find the features on this link. (This can be anytime removed and will not be compatible with future releases, so do not use it for production purposes. Feedback is welcome though.)