Add migration to generator

lib/generators/crono/install/install_generator.rb

@@ -1,12 +1,26 @@
+require 'rails/generators'
+require 'rails/generators/migration'
+require 'rails/generators/active_record'
+
 module Crono
   module Generators
     class InstallGenerator < ::Rails::Generators::Base
+      include Rails::Generators::Migration
+
+      def self.next_migration_number(path)
+        ActiveRecord::Generators::Base.next_migration_number(path)
+      end
+
       desc "Installs crono and generates the necessary configuration files"
       source_root File.expand_path("../templates", __FILE__)
 
       def copy_config
         template 'cronotab.rb.erb', 'config/cronotab.rb'
       end
+
+      def create_migrations
+        migration_template 'migrations/create_crono_jobs.rb', 'db/migrate/create_crono_jobs.rb'
+      end
     end
   end
 end