 strip namespace of top element tag, when use option of strip_namespace
 strip namespace of top element tag, when use option of strip_namespace

yfjd01/GitDocuments,hay/xml2json,KaiyuWang16/xml2json-1,metal-hero/tested_xml2json,metal-hero/tested_xml2json,haiyangd/xml2json-,KaiyuWang16/xml2json,noelpark/xml2json,metal-hero/tested_xml2json