Will add current day to the repo. This function will not change when you reknit the readme. If you want that you will have to use the linklast_change_badge function.
badge_last_change_static(date = NULL)if NULL/empty current date. otherwise use yyyy-mm-dd format
markdown
Other badges: badge_codecov,
badge_cran_ago,
badge_cran_date,
badge_cran_version_ago,
badge_cran_version_release,
badge_cran,
badge_github_fork,
badge_github_star,
badge_last_change,
badge_license,
badge_minimal_r_version,
badge_packageversion,
badge_projectstatus,
badge_rank,
badge_rdocumentation,
badge_thanks_md, badge_travis