content: import React from 'react';
  import IconButton from 'material-ui/IconButton';
  
  
  
  export default function ExampleAdd(props){
      return(
        <IconButton width="40px" tooltip='Add Example File' touch={true} tooltipPosition="top-center" style={{"padding": "0", 'margin':'0', "color":"gray"}}  onClick={()=>{props.exAdd(props.node)}}>
        <img alt='add example file' src="images/icons/add.svg"/>
        </IconButton>
      )
  }
  