update README
update README

zengqingf/TCBlobDownload,dmitrykurochka/TCBlobDownload,iMokhles/TCBlobDownload,ChinaPicture/TCBlobDownload,beiliubei/TCBlobDownload,sandyway/TCBlobDownload,thibaultCha/TCBlobDownload,Benjamin-Dobell/TCBlobDownload,ka1nong/TCBlobDownload,mrdaios/TCBlobDownload,miracle/TCBlobDownload,beiliubei/TCBlobDownload