title: Mousehover over country in leaflet to see its name
body: <p>I am creating a map of the world:</p>
  
  <pre><code>library(leaflet)
  library(rnaturalearth)
  countries &lt;- rnaturalearth::countries110
  mymap &lt;- leaflet(countries)
  mymap %&gt;% addPolygons(stroke = FALSE, smoothFactor = 0.2, fillOpacity = 1)
  </code></pre>
  
  <p>Is it possible to either hover over any country to see its name or to click on any country to see its name?</p>
  
  <p>Thanks a lot!</p>