Beta quality, still some bugs. Plugin for Gitbook that handles citations and references. Expects bibtex references in 'literature.bib'. Uses Citation Style Language stylesheets to generate references. NOTE: this WILL NOT WORK on Gitbook's cloud servers since they continue to use Node v5, and modules required by this plugin require Node v6 or above. TODO: Author names should use CSL; currently a 'sensible' hard-coded format is produced e.g. 'Author A, Author B and Author C' or if more than 3 authors 'Author A et al'.