Update autoEntities.js

add comment about what the module does ;-)

lib/modules/autoEntities.js

@@ -1,3 +1,10 @@
+/**
+ * Module to support subscription to ioBroker states for entities in auto-entities card.
+ * i.e. needs to understand filters in auto entites card and detect entieies affected and subscribe to all states
+ * associated with those entities.
+ */
+
+
 const debugging = false;
 
 function debugLog(msg) {