Adds a better co-routine + delegate based Invoke to MonoBehaviour

MonoBehaviourInvokeExtension.cs

using System;
using System.Collections;
using UnityEngine;

/*
 *  Use by explicit 'this' e.g. this.Invoke( 3.0f, delegate { doSomething(); } );
 */
static class MonoBehaviourInvokeExtension
{
    public static void Invoke( this MonoBehaviour monoBehaviour, float delay, Action action )
    {
        monoBehaviour.StartCoroutine( StartTimer( delay, action ) );
    }

    private static IEnumerator StartTimer( float delay, Action action )
    {
        float actionTime = Time.realtimeSinceStartup + delay;
        while (Time.realtimeSinceStartup < actionTime) yield return false;
        action();
    }
}