update licence badge

Author: joethorley

.gitignore

@@ -10,5 +10,6 @@
 
 *.html
 
+docs/
 inst/docs/
 scripts/

README.Rmd

@@ -18,7 +18,7 @@ knitr::opts_chunk$set(
 <!-- badges: start -->
 [![Lifecycle: maturing](https://img.shields.io/badge/lifecycle-maturing-blue.svg)](https://www.tidyverse.org/lifecycle/#maturing)
 [![R build status](https://github.com/poissonconsulting/fishbc/workflows/R-CMD-check/badge.svg)](https://github.com/poissonconsulting/fishbc/actions)
-[![License: CC0](https://img.shields.io/badge/License-CC0-green.svg)](https://tldrlegal.com/license/creative-commons-cc0-1.0-universal)
+[![License: CCBY4](https://img.shields.io/badge/License-CCBY4-green.svg)](https://creativecommons.org/licenses/by/4.0/)
 [![CRAN status](https://www.r-pkg.org/badges/version/fishbc)](https://CRAN.R-project.org/package=fishbc)
 <!-- badges: end -->
 

README.md

@@ -10,7 +10,7 @@ maturing](https://img.shields.io/badge/lifecycle-maturing-blue.svg)](https://www
 [![R build
 status](https://github.com/poissonconsulting/fishbc/workflows/R-CMD-check/badge.svg)](https://github.com/poissonconsulting/fishbc/actions)
 [![License:
-CC0](https://img.shields.io/badge/License-CC0-green.svg)](https://tldrlegal.com/license/creative-commons-cc0-1.0-universal)
+CCBY4](https://img.shields.io/badge/License-CCBY4-green.svg)](https://creativecommons.org/licenses/by/4.0/)
 [![CRAN
 status](https://www.r-pkg.org/badges/version/fishbc)](https://CRAN.R-project.org/package=fishbc)
 <!-- badges: end -->