added map migration file to add columns

db/migrate/20121026103129_add_all_to_map.rb

@@ -0,0 +1,8 @@
+class AddAllToMap < ActiveRecord::Migration
+  def self.up
+    add_column :maps, :name, :text
+	add_column :maps, :desc, :text
+	add_column :maps, :permission, :text
+	add_column :maps, :user_id, :integer
+  end
+end