added options for utax taxtree and utax db
added options for utax taxtree and utax db

iimog/meta-barcoding-dual-indexing,molbiodiv/meta-barcoding-dual-indexing,iimog/meta-barcoding-dual-indexing,iimog/meta-barcoding-dual-indexing,molbiodiv/meta-barcoding-dual-indexing,molbiodiv/meta-barcoding-dual-indexing