Prefer writing to textContent instead of innerText
Prefer writing to textContent instead of innerText

`innerText` has been long gone, and some browsers ([Waterfox](https://www.waterfoxproject.org)) have removed support for it.

This change keeps writing to it, just in case.  But, [IE9+ supports `textContent`](http://caniuse.com/#search=textContent).  What's the min supported IE for react-look?
rofrischmann/react-look,obscene/Obscene-Stylesheet,rofrischmann/react-look,obscene/Obscene-Stylesheet,rofrischmann/react-look,obscene/Obscene-Stylesheet