fontFamily and fontWeight don't work
| -------------------------------------------------------------------------------------------------
| Reporting a bug or issue
| -------------------------------------------------------------------------------------------------

**Expected behavior:**

`v3.2.0`

![image](https://user-images.githubusercontent.com/6757532/81242654-9b1fa500-9005-11ea-9bbc-18f3ef492c9c.png)


**Observed behavior:**

`v3.2.2`

![image](https://user-images.githubusercontent.com/6757532/81242566-6ad80680-9005-11ea-8159-ee5064426238.png)


**How to reproduce:**

```sh
skpm create my-app --template=airbnb/react-sketchapp
```

```jsx
const Swatch = ({ name, hex }) => (
  <View
    name={`Swatch ${name}`}
    style={{
      height: 96,
      width: 96,
      margin: 4,
      backgroundColor: hex,
      padding: 8,
    }}
  >
    <Text name="Swatch Name" style={{ color: '#FFF', fontSize: 16, fontWeight: 'bold', fontFamily: 'Helvetica' }}>
      {name}
    </Text>
    <Text name="Swatch Hex" style={{ color: '#FFF' }}>
      {hex}
    </Text>
  </View>
);
```

**Sketch version:**

63.1

**Please attach screenshots, a zip file of your project, and/or a link to your github project**
