[#4184] Starting on the budget data migration.

lib/redmine_contracts/budget_plugin_migration.rb

@@ -0,0 +1,18 @@
+module RedmineContracts
+
+  # TODO: decide how this is activated.
+  # Have the user dump yaml themselves?  Or rename the tables and
+  # SQL select the data out into yaml?
+  # Deliverable.all.collect {|d| d.attributes}.to_yaml
+  class BudgetPluginMigration
+    @@data = nil
+
+    def self.migrate(old_data)
+      @@data = old_data
+    end
+
+    def self.data
+      @@data
+    end
+  end
+end