Wrong value being passed to IconToggle style prop

[iRoachie]

Version: Latest (master branch)
React Native Version: 0.50.3

The wrong value is being passed to the style prop on IconToggle in the ListItem component https://github.com/xotahal/react-native-material-ui/blob/master/src/ListItem/ListItem.react.js#L419.

The style prop expects an object as specified:

react-native-material-ui/src/IconToggle/IconToggle.react.js

Lines 46 to 48 in b9713ef

	style: PropTypes.shape({
	container: ViewPropTypes.style,
	icon: Text.propTypes.style,

There's two ways to fix this, either add array to the proptype definition or maybe an array is being passed in where it shouldn't be.