Horizonal={false} doesn't work

Which OS

Win 7 x64

Version

Which versions are you using:

• react-native-swiper v1.5.12
• react-native v0.54.0

Expected behaviour

Vertical swiper

Actual behaviour

Horizonal default swiper, with vertical buttons

Steps to reproduce

I've just installed RN and react-native-swiper.
This is the code of the component

import React from 'react'
import {
	Text,
	View,
	ImageBackground
} from 'react-native'
import Swiper from 'react-native-swiper'

var styles = {
	wrapper: {
	},
	slide1: {
		flex: 1,
		justifyContent: 'center',
		alignItems: 'center',
	},
	slide2: {
		flex: 1,
		justifyContent: 'center',
		alignItems: 'center',
		backgroundColor: '#97CAE5'
	},
	slide3: {
		flex: 1,
		justifyContent: 'center',
		alignItems: 'center',
		backgroundColor: '#92BBD9'
	},
	text: {
		color: '#fff',
		fontSize: 30,
		fontWeight: 'bold'
	}
}

export default () => <Swiper style={styles.wrapper} 
 horizontal={false} nextButton={<Text> next </Text>} prevButton={<Text> prev </Text>}>
	<View style={styles.slide1}>
		<ImageBackground
			source={require('./../img/slide-home1.jpg')}
			style={{ flex: 1,width: '100%', height: '100%'}}>
			<View style={{ flex: 1, alignItems: 'center', justifyContent: 'center' }}>
				<Text>Your Contents</Text>
			</View>

		</ImageBackground >
	</View>
	<View style={styles.slide2}>
		<Text style={styles.text}>Beautiful</Text>
	</View>
	<View style={styles.slide3}>
		<Text style={styles.text}>And simple</Text>
	</View>
</Swiper>

Start by running the provided Swiper component with react-native-swiper v1.5.12 and React Native v0.54.0 on the reported setup, then inspect how the Swiper entry point handles the horizontal prop. Done means horizontal={false} produces vertical swiping and the supplied next and previous buttons behave consistently with that orientation.