add link to repo

IdrinthsImprovedHeroes.xml

@@ -10,9 +10,9 @@
 This mod is still highly WIP!
 
 Adds 4 Skills to the general Branch and two to each class branch, that all scale with the hero's level. While class skills try to add to the class' flavour, the generic ones usually are independant of where the hero is assigned.
-</Description>
-        
-		<Author>Idrinth</Author>
+
+Source code is at https://github.com/Idrinth-s-Endless-Space-2-Mods/IdrinthsImprovedHeroes - contributions are always highly welcome.</Description>
+     		<Author>Idrinth</Author>
 
 		<Homepage></Homepage>