Add size (constraints) to SpriteNode
<p>I'm looking for a way to add height and width constraints to a SpriteNode.</p>

<pre><code>let firstObject = SKSpriteNode(imageNamed: "card1")

override func didMoveToView(view: SKView) {
    firstObject.position = CGPoint(x: size.width * 0.5, y: size.height * 0.5)
    addChild(firstObject)
}
</code></pre>

<p>This is my code at the moment - it shows the image but it is way to big, so now I want to do something like this;</p>

<pre><code>firstObject.addConstraints(height and width) 
</code></pre>

<p>But I can't seem to find the answer anywhere. </p>