added stub for db migrations

db/000_baupm_default_updates.rb

@@ -0,0 +1,9 @@
+class BaupmDefaultUpdate < ActiveRecord::Migration[4.2]
+  def up
+
+  end
+
+  def down
+
+  end
+end

init.rb

@@ -10,7 +10,7 @@ Redmine::Plugin.register :baupm_core do
   author 'Marco Grätsch'
   author_url 'https://src.bundespruefstelle.ch/magdev'
   description "Common modifications for BauPM"
-  version '0.2.1'
+  version '0.2.0'
 
   requires_redmine :version_or_higher => '4.1.0'