add variable

gistfile1.txt

using UnityEngine;
using System.Collections;

public class SpawnFood : MonoBehaviour {
    // Food Prefab
    public GameObject foodPrefab;

    // Borders
    public Transform borderTop;
    public Transform borderBottom;
    public Transform borderLeft;
    public Transform borderRight;

    // Use this for initialization
    void Start () {
    
    }
}