Add example of the strech class in skeleton
diff --git a/inst/rmarkdown/templates/revealjs_presentation/skeleton/skeleton.Rmd b/inst/rmarkdown/templates/revealjs_presentation/skeleton/skeleton.Rmd
index ec391ce..2f2bc6d 100644
--- a/inst/rmarkdown/templates/revealjs_presentation/skeleton/skeleton.Rmd
+++ b/inst/rmarkdown/templates/revealjs_presentation/skeleton/skeleton.Rmd
@@ -47,3 +47,14 @@
 
 ::::
 
+## Insert an image
+
+You can insert images
+
+![revealjs logo](https://revealjs.com/images/logo/reveal-black-text.svg)
+
+## Insert an image on the whole slide
+
+Using the `.strech` class
+
+![revealjs logo](https://revealjs.com/images/logo/reveal-black-text.svg){.stretch}