code: public List<MetadataInfo> dbInit(final MigratoryOption ... options) throws MigratoryException
      {
          init();
          final InternalInit internalInit = new InternalInit(this);
          return internalInit.init(options);
      }
docs: Creates and initializes the Migratory metadata table.
  
  Returns null if the table already exists, returns a list of migration results
  for the migrations executed otherwise.