add so attribution

mkessler-faktor.sty

@@ -7,9 +7,12 @@
 % - scaling the / in the middle
 % - fine positioning of enumerator / denominator
 
-% Essentially taken from 
+% This is essentially taken from the stackexchange question found at
 % https://tex.stackexchange.com/questions/27591/extending-the-faktor-package
-% and added a mirrored \cofaktor command
+% and answered by 'Werner' (https://tex.stackexchange.com/users/5764/werner)
+%
+% This package only packages the corresponding answer and provides an analoguous way of a \cofactor command
+
 
 %Dependencies
 \RequirePackage{xparse}