Adds migrations & models for administrators & moderators

db/migrate/20150807140235_create_administrators.rb

@@ -0,0 +1,7 @@
+class CreateAdministrators < ActiveRecord::Migration
+  def change
+    create_table :administrators do |t|
+      t.belongs_to :user, index: true, foreign_key: true
+    end
+  end
+end

db/migrate/20150807140346_create_moderators.rb

@@ -0,0 +1,7 @@
+class CreateModerators < ActiveRecord::Migration
+  def change
+    create_table :moderators do |t|
+      t.belongs_to :user, index: true, foreign_key: true
+    end
+  end
+end