This project has evolved from a reworking of Four Bodhisatva Vows by RoseWagsBlue. It is now a set of templates for formatting Japanese texts written in kanji.
To install the \LaTeX package so that it can be used anywhere in the system without the .sty file being in your working directory, just copy the sutras.sty file to texmf-local/tex/latex/sutras (wherever that might be on your system -- you'll have to create the sutras directory) and then run texhash so your latex engine knows where to find the file.