Update package react and react-dom to version 15 and update code styl…

[Pakinwet]

• Update Dependencies package for react version 15 .
• Update code style better server-side rendering :)

[vieyama]

give the style on your TabList, example : <TabList style={{ position: "fixed", width: "100%" }} >

and give padding top to the TabPanel: <TabPanel style={{ paddingTop: "50px" }}>

[deflexable]

@vieyama doing this stops the controlled feature

[alexpapworth]

Hello, here is a simple solution to achieve scrollable tabs.

1. Add a container around <TabList> and assign overflow: scroll.
2. Assign width: max-content; to .react-tabs__tab-list

Demo available here: https://codepen.io/alexpapworth/pen/eYaNorx