readme update

stats/models.py

@@ -6,6 +6,9 @@ User = get_user_model()
 # Create your models here.
 
 class StatsLog(models.Model):
+    """
+    Keep track of interactions between user and product links
+    """
 
     model = models.ForeignKey(ContentType, on_delete=models.DO_NOTHING, null=True)
     user = models.ForeignKey(User, on_delete=models.DO_NOTHING, null=True)