Adding user_certifications relation, and paperclip gem

db/migrate/20130125101623_add_instructor_to_users.rb

@@ -0,0 +1,5 @@
+class AddInstructorToUsers < ActiveRecord::Migration
+  def change
+    add_column :users, :instructor, :boolean
+  end
+end

db/migrate/20130125102002_create_user_certifications.rb

@@ -0,0 +1,10 @@
+class CreateUserCertifications < ActiveRecord::Migration
+  def change
+    create_table :user_certifications do |t|
+      t.integer :user_id
+      t.integer :certification_id
+
+      t.timestamps
+    end
+  end
+end