add DOI

Makefile

@@ -26,4 +26,4 @@ buildfast:
 style:
 	Rscript -e "styler::style_pkg()"
 
-pr: style doc check site
+pr: style check site

README.Rmd

@@ -22,6 +22,7 @@ knitr::opts_chunk$set(
 [![Coverage Status](https://img.shields.io/codecov/c/github/tlverse/tmle3/master.svg)](https://codecov.io/github/tlverse/tmle3?branch=master)
 [![Project Status: Active – The project has reached a stable, usable state and is being actively developed.](https://www.repostatus.org/badges/latest/active.svg)](https://www.repostatus.org/#active)
 [![License: GPL v3](https://img.shields.io/badge/License-GPL%20v3-blue.svg)](http://www.gnu.org/licenses/gpl-3.0)
+[![DOI](https://zenodo.org/badge/DOI/10.5281/zenodo.4603358.svg)](https://doi.org/10.5281/zenodo.4603358)
 
 > The _Extensible_ TMLE framework
 
@@ -96,8 +97,8 @@ After using the `tmle3` R package, please cite the following:
           year = {2021},
           howpublished = {\url{https://github.com/tlverse/tmle3}},
           note = {{R} package version 0.2.0},
-          url = {https://doi.org/},
-          doi = {}
+          url = {https://doi.org/10.5281/zenodo.4603358},
+          doi = {10.5281/zenodo.4603358}
         }
 
 ---

inst/CITATION

@@ -0,0 +1,12 @@
+citHeader("Please cite the following when using the 'tmle3' software package.")
+
+year <- format(Sys.Date(), "%Y")
+note <- sprintf("R package version %s", meta$Version)
+
+bibentry(bibtype = "Manual",
+         title = "{tmle3}: The Extensible {TMLE} Framework",
+         author = person("Jeremy", "Coyle"),
+         year = year,
+         note = note,
+         doi = "10.5281/zenodo.4603358",
+         url = "https://github.com/tlverse/tmle3")