added method to retrieve external data
added method to retrieve external data

andrewyatz/public-plugins,andrewyatz/public-plugins,muffato/public-plugins,muffato/public-plugins,Ensembl/public-plugins,andrewyatz/public-plugins,Ensembl/public-plugins,muffato/public-plugins,Ensembl/public-plugins,muffato/public-plugins,andrewyatz/public-plugins,andrewyatz/public-plugins