Simple usage instructions in the doc about react-google-maps HOT 2 CLOSED

_handle_map_click (event) {
    const {markers} = this.state;
    markers.push({
     position: event.latLng,
     draggable: true
    });
    this.setState({ markers });
}

<Marker
  position={marker.position}
  key={marker.key}
  draggable={marker.draggable}
  onDragend={this._handle_marker_dragend.bind(this, index)}
  animation={marker.animation}
  onRightclick={this._handle_marker_rightclick.bind(this, index)} />

_handle_marker_dragend (index, event) {
  var {markers} = this.state;
  markers[index].position = event.latLng;
  this.setState({ markers });
}