Added new package option bibstyle: allows you to set a reference style for the bibliography [issue 5]

cleanthesis.tex

@@ -145,6 +145,11 @@ The default (still) is \texttt{bibtex}.
 Sets the file name of the bibtex file used for the bibliography.
 If this option is not used (defined), the package looks for the default bibliography \texttt{bib-refs.bib}.
 
+\optitem[alphabetic]{bibstyle}{\opt{alphabetic},\opt{numeric}}
+
+Sets whether to use an \texttt{alphabetic} or a \texttt{numeric} reference style for the bibliography.
+The default is \texttt{alphabetic}.
+
 \end{optionlist}
 
 \end{document}