<Text> does not support numberOfLines or ellipsizeMode
👋 Hello! Thanks for contributing. Please use the template that matches your intention  

_I am..._

| -------------------------------------------------------------------------------------------------
| Reporting a bug or issue
| -------------------------------------------------------------------------------------------------

NB: This is more for bookmarking purposes, it took me a while to uncover that Sketchapp does not support overflow/ellipsis, and felt that creating an issue would allow other people a shortcut.

**Expected behavior:**

React Native supports text truncation using a combination of ```numberOfLines``` and ```ellipsizeMode```.

**Observed behavior:**

These properties have no effect in Sketch, because the Sketch application doesn't support them.

The ```<Text>``` component supports a ```resizeConstraints``` property with booleans of top, bottom, left, right, fixedWidth and fixedHeight, and although these have an effect on the containing element, they don't prevent the text from overflowing from the element and affecting element position (when combined with style height/width).

In the screenshot, I've highlighted the long text which has been wrapped to a second line.  Note also the text properties which show the resizing constraint (height) and the height of 30 specified via the ```style={{height:30}}```.

**How to reproduce:**

NB: No point in passing ```numberOfLines={1}``` or ```ellipsizeMode={'head'|'tail'|'middle'}``` as [they are not passed to the underlying text component](https://github.com/airbnb/react-sketchapp/blob/537ced5562ac67f877b53f40167a5f2148664a4a/src/components/Text.js#L40-L51).

```js
<Text style={{height: 30}} resizingConstraint={{fixedHeight: true}}>
  Home and away this is a very long project title
</Text>
```

**Sketch version:**
48.2

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

![sketch](https://user-images.githubusercontent.com/2016856/36448224-cee12c86-167e-11e8-9dd1-c30861f1982e.jpeg)
