added the choice of downloading the refdbs into a specified path
added the choice of downloading the refdbs into a specified path

wholebiome/MetaPathways_Python_Koonkie.3.0,Koonkie/MetaPathways_Python_Koonkie.3.0,wholebiome/MetaPathways_Python_Koonkie.3.0,Koonkie/MetaPathways_Python_Koonkie.3.0,wholebiome/MetaPathways_Python_Koonkie.3.0,Koonkie/MetaPathways_Python_Koonkie.3.0