add total downloads badge

Author: eddelbuettel

ChangeLog

@@ -1,3 +1,7 @@
+2021-12-29  Dirk Eddelbuettel  <edd@debian.org>
+
+	* README.md: Add total downloads badge
+
 2021-12-08  Dirk Eddelbuettel  <edd@debian.org>
 
 	* README.md: Remove unused continuous integration artifact and badge

README.md

@@ -8,7 +8,8 @@
 [![Coverage Status](https://codecov.io/gh/RcppCore/RcppEigen/graph/badge.svg)](https://codecov.io/github/RcppCore/RcppEigen?branch=master)
 [![Debian package](https://img.shields.io/debian/v/r-cran-rcppeigen/sid?color=brightgreen)](https://packages.debian.org/sid/r-cran-rcppeigen)
 [![Last Commit](https://img.shields.io/github/last-commit/RcppCore/RcppEigen)](https://github.com/RcppCore/RcppEigen)
-[![Downloads](https://cranlogs.r-pkg.org/badges/RcppEigen?color=brightgreen)](https://www.r-pkg.org:443/pkg/RcppEigen)
+[![Downloads (monthly)](https://cranlogs.r-pkg.org/badges/RcppEigen?color=brightgreen)](https://www.r-pkg.org:443/pkg/RcppEigen)
+[![Downloads (total)](https://cranlogs.r-pkg.org/badges/grand-total/RcppEigen?color=brightgreen)](https://www.r-pkg.org:443/pkg/RcppEigen)
 [![CRAN use](https://jangorecki.gitlab.io/rdeps/RcppEigen/CRAN_usage.svg?sanitize=true)](https://cran.r-project.org/package=RcppEigen)
 [![BioConductor use](https://jangorecki.gitlab.io/rdeps/RcppEigen/BioC_usage.svg?sanitize=true)](https://cran.r-project.org/package=RcppEigen)
 [![StackOverflow](https://img.shields.io/badge/stackoverflow-rcpp-orange.svg)](https://stackoverflow.com/questions/tagged/rcpp)