text: import React, { Component } from 'react';
  import * as d3 from "d3";
  
  class Viz extends Component {
    render() {
        d3.csv('./phenotype.csv');
      return (
          <div className="App-intro">
            Example of adding a new component.
          </div>
      );
    }
  }
  
  export default Viz;