Don't send stats until nword >= 3

inst/shiny-input-app/dev-shiny-input.Rmd

 - the current timestamp as `time` and 
 - the `text` in the input
 
+(`r github_sha_link("fa02cb2314fa58ea714002072be0f78da2c6aa82")`)
+
+### Your Turn: Hold your horses
+
+How does the app report the initial typing speed rates?
+
+Add another `if` statement to continue to return `null`
+until there are at least 3 words in the text box.

inst/shiny-input-app/typing.js

       return null
     }
 
+    if (nword < 3) return null
+
     let time = Date.now()
     let elapsed = (time - this._timing) / 1000
     return {