title: Python - Search plugin of Folium doesn't appear
body: <p>I'm trying to reproduce the following jupyter notebook :</p>
  
  <p><a href="https://nbviewer.jupyter.org/github/jtbaker/folium/blob/geojsonmarker/examples/plugin-Search.ipynb" rel="nofollow noreferrer">https://nbviewer.jupyter.org/github/jtbaker/folium/blob/geojsonmarker/examples/plugin-Search.ipynb</a></p>
  
  <p>But once I'm trying to create the map I had to make a few changes to the search plugin because of the documentation:</p>
  
  <pre><code>citysearch = Search(layer=citygeo, 
                  geom_type='Point', 
                  placeholder="Search for a US City", 
                  collapsed=True, 
                  search_label='nameascii'
                 ).add_to(m)
  </code></pre>
  
  <p>becomes, according to the folium documentation <a href="https://python-visualization.github.io/folium/plugins.html#folium.plugins.Search" rel="nofollow noreferrer">here</a> :</p>
  
  <pre><code>citysearch = Search(data=citygeo, 
                     geom_type='Point', 
                     search_label='nameascii'
                     ).add_to(m)
  </code></pre>
  
  <p>The issue is that, at best the search plugin doesn't appear and at worse my folium map isn't displayed. Does anyone have this problem as well ? Or is there any dependecies I've forgot ?</p>