Small issue: no children --> exception

[rogierschouten]

Hi,
Very small issue here: when there are (presumably temporarily) no child elements for the tabs elements, then the page doesn't load due to the following code:

                // Setup tab/panel ids
        React.Children.forEach(this.props.children[0].props.children, function () {
            tabIds.push(uuid());
            panelIds.push(uuid());
        });

Uncaught TypeError: Cannot read property 'children' of undefined 

[rogierschouten]

Oh, the cause is slightly more involved. Copypasting the example code, there are javascript comments between the elements. JSX does not handle comments between elements, resulting in elements without children. So you may want to adjust README.md as well perhaps.