Example:

This is just a plain grey animated box that takes a height and width as props. 
Using that, you can use it in place of elements while they load. 

Default: 
```js
<LoadingPlaceholder />
```

Example of use: 
```js
<div style={{display: `inline-flex`}}>
    <div style={{marginRight: `30px`}}>
        <LoadingPlaceholder width="180px" height="120px" />
    </div>
    <div>
        <LoadingPlaceholder width="340px" height="15px" />
        <br/>
        <LoadingPlaceholder width="500px" height="48px" />
        <br/>
        <LoadingPlaceholder width="170px" height="40px" />
    </div>
</div>
```