Default as for many-to-many self-associations

Default as for many-to-many self-associations v2

lib/associations/has-many.js

@@ -118,6 +118,11 @@ module.exports = (function() {
       this.isAliased = true
     } else {
       this.as = Utils.pluralize(this.target.name, this.target.options.language)
+      if (this.isSelfAssociation && this.doubleLinked && this.as == this.targetAssociation.as) {
+        this.as = this.target.name + Utils.pluralize('Reverse', this.target.options.language)
+        this.associationAccessor = this.as
+        this.isAliased = true
+      }
     }
 
     this.accessors = {