add logo to vignette
diff --git a/vignettes/awesome_table_in_html.Rmd b/vignettes/awesome_table_in_html.Rmd
index 0fc99e3..473ecf0 100644
--- a/vignettes/awesome_table_in_html.Rmd
+++ b/vignettes/awesome_table_in_html.Rmd
@@ -14,6 +14,8 @@
   %\VignetteEncoding{UTF-8}
 ---
 
+<img src="kableExtra_sm.png" align="right" alt="logo" width="80" height = "93" style = "border: none; float: right;">
+
 > Please see the package [documentation site](http://haozhu233.github.io/kableExtra/) for how to use this package in LaTeX.
 
 # Overview
diff --git a/vignettes/awesome_table_in_pdf.Rmd b/vignettes/awesome_table_in_pdf.Rmd
index 204d0c4..a5965db 100644
--- a/vignettes/awesome_table_in_pdf.Rmd
+++ b/vignettes/awesome_table_in_pdf.Rmd
@@ -32,6 +32,9 @@
 > Please see the package [documentation site](http://haozhu233.github.io/kableExtra) for how to use this package in HTML and more.  
 
 # Overview
+\begin{wrapfigure}{r}{0.2\textwidth}\centering
+  \includegraphics{kableExtra_sm.png}
+\end{wrapfigure}
 The goal of `kableExtra` is to help you build common complex tables and manipulate table styles. It imports the pipe `%>%` symbol from `magrittr` and verbalizes all the functions, so basically you can add "layers" to a kable output in a way that is similar with `ggplot2` and `plotly`.
 
 To learn how to generate complex tables in LaTeX, please visit [http://haozhu233.github.io/kableExtra/awesome_table_in_html.html](http://haozhu233.github.io/kableExtra/awesome_table_in_html.html).
diff --git a/vignettes/kableExtra_sm.png b/vignettes/kableExtra_sm.png
new file mode 100644
index 0000000..2cbe364
--- /dev/null
+++ b/vignettes/kableExtra_sm.png
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