SVG Filter support

[JUSTIVE]

React supports svg filters like feblend, feflood, fematrix, etc.. (see https://github.com/facebook/react/search?q=feblend).
I can't use those tags with reason-react, seem there are no bindings for them.

[davesnx]

Hey @JUSTIVE

All HTML tags in Reason-react (and as well React.js) are camelCase. So feBlend, feMatrix and all of the SVG tags are available under this lib.