Replacing Loop div element with Fragment

[hasparus]

react-game-kit/src/components/loop.js

Lines 38 to 48 in e9797f4

	const defaultStyles = {
	height: '100%',
	width: '100%',
	};
	const styles = { ...defaultStyles, ...this.props.style };
	return (
	<div style={styles}>
	{this.props.children}
	</div>
	);
	}

Since Loop doesn't say anything about rendering, maybe we could change this div to React.Fragment?
I'm happy to make a PR if it's okay.