README.md

Seeing that the bubbles json call returns something like:

[
       {name: 'Hot', latitude: 21.32, longitude: 5.32, radius: 10, fillKey: 'gt50'},
       {name: 'Chilly', latitude: -25.32, longitude: 120.32, radius: 18, fillKey: 'lt50'},
       {name: 'Hot again', latitude: 21.32, longitude: -84.32, radius: 8, fillKey: 'gt50'},
]

maps.js

var election = new Datamap({
  scope: 'usa',
  element: document.getElementById('container1'),
  geographyConfig: {
    popupTemplate: function(geo, data) {
      return data && data.info && "<div class='hoverinfo'><strong>" + data.info + "</strong></div>";
    },
    highlightOnHover: false,
    borderColor: '#444',
    borderWidth: 0.5
  },
  done: function(map) {
    d3.json('/url/for/bubbles/json', function( error, data ) {
      if ( error ) {
        console.warn(error);
      }
      
      map.bubbles(data);
    });
  },
  data: {},
  fills: {
    'Visited': '#306596',
    'neato': '#0fa0fa',
    'Trouble': '#bada55',
    defaultFill: '#dddddd'
  }
});