function Navbar(props, context) {
	    (0, _classCallCheck3['default'])(this, Navbar);

	    var _this = (0, _possibleConstructorReturn3['default'])(this, _React$Component.call(this, props, context));

	    _this.handleToggle = _this.handleToggle.bind(_this);
	    _this.handleCollapse = _this.handleCollapse.bind(_this);
	    return _this;
	  }
Explicitly set the visiblity of the navbar body

@controllable onToggle