pkgdown: account for badges

Author: pat-s

README.Rmd

@@ -8,10 +8,12 @@ Package website: [release](https://mlr3pipelines.mlr-org.com/) | [dev](https://m
 
 Dataflow Programming for Machine Learning in R.
 
+<!-- badges: start -->
 [![Travis build status](https://travis-ci.org/mlr-org/mlr3pipelines.svg?branch=master)](https://travis-ci.org/mlr-org/mlr3pipelines)
 [![CRAN](https://www.r-pkg.org/badges/version/mlr3pipelines)](https://cran.r-project.org/package=mlr3pipelines)
 [![Coverage](https://codecov.io/github/mlr-org/mlr3pipelines/branch/master/graphs/badge.svg)](https://codecov.io/github/mlr-org/mlr3pipelines)
 [![StackOverflow](https://img.shields.io/badge/stackoverflow-mlr3-orange.svg)](https://stackoverflow.com/questions/tagged/mlr3)
+<!-- badges: end -->
 
 ```{r, include = FALSE}
 knitr::opts_chunk$set(

README.md

@@ -6,11 +6,14 @@ Package website: [release](https://mlr3pipelines.mlr-org.com/) |
 
 Dataflow Programming for Machine Learning in R.
 
+<!-- badges: start -->
+
 [![Travis build
 status](https://travis-ci.org/mlr-org/mlr3pipelines.svg?branch=master)](https://travis-ci.org/mlr-org/mlr3pipelines)
 [![CRAN](https://www.r-pkg.org/badges/version/mlr3pipelines)](https://cran.r-project.org/package=mlr3pipelines)
 [![Coverage](https://codecov.io/github/mlr-org/mlr3pipelines/branch/master/graphs/badge.svg)](https://codecov.io/github/mlr-org/mlr3pipelines)
 [![StackOverflow](https://img.shields.io/badge/stackoverflow-mlr3-orange.svg)](https://stackoverflow.com/questions/tagged/mlr3)
+<!-- badges: end -->
 
 ## What is `mlr3pipelines`?