Unity 5 2D - How to scale a quad to fit all screen resolutions?

Hi. So I’m trying to have a nice parallax effect in a 2D game I’m trying to make but I’m having trouble getting my sprites to scale to all resolutions.

Here’s the script that I have attached to my background sprites:

using UnityEngine;
using System.Collections;

public class BackgroundScaler : MonoBehaviour {

	public int textureSize = 194;

	void Start () {

		var width = Mathf.Ceil (Screen.width / (textureSize / CameraScaler.scale));
		var height = Mathf.Ceil (Screen.height / (textureSize / CameraScaler.scale));


		if (gameObject.name == "Bg1") {
			transform.localScale = new Vector3 (width * textureSize, 40f, 1);
		
		} else if (gameObject.name == "Bg2") {
			transform.localScale = new Vector3 (width * textureSize, 40f, 1);

		} else if (gameObject.name == "Bg3") {
			transform.localScale = new Vector3 (width * textureSize, 100f, 1);

		} else if (gameObject.name == "Grass") {
			transform.localScale = new Vector3 (width * textureSize, 20f, 1);

		} else if (gameObject.name == "Ground") {
			transform.localScale = new Vector3 (width * textureSize, 70f, 1);
			
		} else {
			transform.localScale = new Vector3 (width * textureSize, height * textureSize, 1);
		}


		GetComponent<Renderer> ().material.mainTextureScale = new Vector3 (width, height, 1);


	}
}

And here’s the script I have attached to the main camera:

using UnityEngine;
using System.Collections;

public class CameraScaler : MonoBehaviour {


	public static float pixelToUnits = 1f;
	public static float scale = 1f;

	public Vector2 nativeResolution = new Vector2(800,480);

	void Awake() {

		scale = Screen.height / nativeResolution.y;
		pixelToUnits *= scale;
		Camera.main.orthographicSize = (Screen.height / 2.0f) / pixelToUnits;

	}
	
}

Can someone please help me out? Thanks!

Can someone please help?