message: Add StyleSheet to styling doc
diff: @@ -108,6 +108,17 @@ const style = {
  }
  <View style={style} />
  +
  +// StyleSheet
  +const styles = StyleSheet.create({
  + foo: {
  + backgroundColor: 'hotPink',
  + width: 300,
  + }
  +})
  +
  +<View style={styles.foo} />
  +<View style={[styles.foo, styles.bar]} />
  ```
  You can use variables in your styles just like a standard React application:
  