使用EditorWindow.ShowNotification在一个窗口中显示提示信息

在一段时间后自动淡出，用RemoveNotification可立马删除

public class WizardEditor : ScriptableWizard
{

    [MenuItem("Tools/CrerteWizard")]
    static void CrerteWizard()
    {
        ScriptableWizard.DisplayWizard<WizardEditor>("title", "createButton","otherButton");
    }

    void OnWizardOtherButton()
    {
        ShowNotification(new GUIContent("hello"));
    }
}