daul build for video placement

Author: libjohn

docs/01_georeference.html

@@ -338,8 +338,8 @@ <h3>Plot XY on the Map</h3>
 <span class="st">  </span><span class="kw">addMarkers</span>(<span class="dt">lat =</span> <span class="op">~</span>Latitude, 
              <span class="dt">lng =</span> <span class="op">~</span>Longitude, 
              <span class="dt">popup =</span> xy_locations<span class="op">$</span>Company)</code></pre></div>
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docs/02_choropleth.html

@@ -279,6 +279,10 @@
 <div id="overview" class="section level2">
 <h2>Overview</h2>
 <p>These learning and quick-reference resource pages support the face-to-face workshop, <em>Mapping with R</em>, offered via the <a href="https://library.duke.edu/data/">Data &amp; Visualization Services</a> Department, Duke University Libraries. The exercises and workshop are designed to help you learn georeferencing, make a <a href="https://en.wikipedia.org/wiki/Choropleth_map">choropleth</a> with USA census data via the <a href="https://walkerke.github.io/tidycensus/">tidycensus</a> package, and briefly introducing the <a href="http://r-spatial.github.io/sf/">simple features for R</a> package. The introduction of these very useful R packages and some very basic concepts will give you enough information to make your own customized thematic maps.</p>
+<div class="picture1">
+<iframe width="450" height="315" src="https://www.youtube.com/embed/cMNJdj8UGpY" frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen>
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 <p>During the Workshop we introduce</p>
 <ul>
 <li>Choropleths</li>