add base64 for osx
add base64 for osx

slash3b/tldr,zoisom/tldr,felixonmars/tldr,kuanyui/tldr,rubenvereecken/tldr,UncommonPleb/tldr,igorshubovych/tldr,Phizho/tldr,felixonmars/tldr,mshmoustafa/tldr,kuanyui/tldr,slash3b/tldr,cptdeka10/tldr,cptdeka10/tldr,deekim/tldr,felixonmars/tldr,deekim/tldr,WALL-E/tldr,mshmoustafa/tldr,deekim/tldr,slash3b/tldr,igorshubovych/tldr,katekyan/tldr,katekyan/tldr,zoisom/tldr,UncommonPleb/tldr,zoisom/tldr,UncommonPleb/tldr,Phizho/tldr,AgamAgarwal/tldr,Phizho/tldr,cptdeka10/tldr,katekyan/tldr,rubenvereecken/tldr,WALL-E/tldr,AgamAgarwal/tldr