Added some documentation for new features
diff --git a/docs/use_kable_in_shiny.Rmd b/docs/use_kable_in_shiny.Rmd
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+---
+title: "Use kable in Shiny"
+output: html_document
+---
+
+```{r setup, include=FALSE}
+knitr::opts_chunk$set(echo = TRUE)
+```
+
+```{r, eval = FALSE}
+library(shiny)
+
+ui <- fluidPage(
+
+   # Application title
+   titlePanel("mtcars"),
+
+   sidebarLayout(
+      sidebarPanel(
+         sliderInput("mpg", "mpg Limit",
+                     min = 11, max = 33, value = 20)
+      ),
+
+      mainPanel(
+         tableOutput("mtcars_kable")
+      )
+   )
+)
+
+server <- function(input, output) {
+  library(dplyr)
+  library(kableExtra)
+   output$mtcars_kable <- function() {
+     req(input$mpg)
+     mtcars %>%
+       mutate(car = rownames(.)) %>%
+       select(car, everything()) %>%
+       filter(mpg <= input$mpg) %>%
+       knitr::kable("html") %>%
+       kable_styling("striped", full_width = F) %>%
+       add_header_above(c(" ", "Group 1" = 5, "Group 2" = 6))
+   }
+}
+
+# Run the application
+shinyApp(ui = ui, server = server)
+
+
+```
+
+To simply:
+
+```{r, eval=FALSE}
+shiny::runGist("https://gist.github.com/haozhu233/9e675e1a8a1bb4744f9ebc9246a2366b")
+```