created template selecting

web/db/migrate/20160220125727_create_file_versions.rb

@@ -0,0 +1,11 @@
+class CreateFileVersions < ActiveRecord::Migration
+  def change
+    create_table :file_versions do |t|
+      t.integer :number, null: false, default: 1
+      t.boolean :pulled, null: false, default: false
+      t.integer :configuration_file_id, null: false
+      t.binary :content, :limit => 10.megabyte
+      t.timestamps null: false
+    end
+  end
+end