Adds a :created_at timestamp to Contributor model.

app/models/contributer.rb

@@ -1,5 +1,4 @@
 class Contributer < CDQManagedObject
-  scope :all, sort_by(:name)
   scope :starts_with_s, where(:name).begins_with('s').sort_by(:name)
 
   def cell

schemas/0001_initial.rb

@@ -1,5 +1,7 @@
 schema "0001 initial" do
   entity "Contributer" do
     string :name, optional: false
+
+    datetime :created_at
   end
 end