use roxygen at the beginning of a check
diff --git a/kableExtra.Rproj b/kableExtra.Rproj
index 497f8bf..270314b 100644
--- a/kableExtra.Rproj
+++ b/kableExtra.Rproj
@@ -18,3 +18,4 @@
 BuildType: Package
 PackageUseDevtools: Yes
 PackageInstallArgs: --no-multiarch --with-keep.source
+PackageRoxygenize: rd,collate,namespace