Upper for checking file

UpperHelper.cs

using UnityEngine;
using UnityEditor;
using System.Collections;

[InitializeOnLoad]
public class UpperHelper {
	static UpperHelper() {
		Debug.Log ("UpperHelper");
		Test ();
	}

UpperSettings.cs

using UnityEngine;
using UnityEditor;
using System.Collections;
using System.IO;

public class UpperSettings : Editor {
	static string package_path = "";

	[MenuItem("Upper/Import Package",false)]
	public static void LoadPackageButton()
	{
		package_path = EditorUtility.OpenFilePanel ("Import Unity Package", "/", "unitypackage");	
		Debug.Log (package_path);
		if (!string.IsNullOrEmpty(package_path))
			EditorUtility.OpenWithDefaultApp (package_path);
	}

	[MenuItem("Upper/Test Button",true)]
	public static void Yeaj()
	{
		CheckFile ();
	}

	public static void CheckFile(){
		Debug.Log ("CheckFile");
		//MenuItem ("Upper/Import Package", true);
	}
}