Activity provider example in sample plugin.

git-svn-id: http://redmine.rubyforge.org/svn/trunk@1703 e93f8b46-1217-0410-a6f0-8f06a7374b81

extra/sample_plugin/db/migrate/001_create_meetings.rb

@@ -0,0 +1,15 @@
+# Sample plugin migration
+# Use rake db:migrate_plugins to migrate installed plugins
+class CreateMeetings < ActiveRecord::Migration
+  def self.up
+    create_table :meetings do |t|
+      t.column :project_id, :integer, :null => false
+      t.column :description, :string
+      t.column :scheduled_on, :datetime
+    end
+  end
+
+  def self.down
+    drop_table :meetings
+  end
+end