Setting up Photon for Unity 5

NetworkManager.cs

using UnityEngine;
using System.Collections;

public class NetworkManager : Photon.MonoBehaviour {

	private const string roomName = "RoomName";
	private TypedLobby lobbyName = new TypedLobby("New_Lobby", LobbyType.Default);
	private RoomInfo[] roomsList;
	public GameObject player;
	
	void Start () {
		PhotonNetwork.ConnectUsingSettings("v4.2");
	}
	
	void Update () {

	}
	
	void OnGUI()
	{
		if (!PhotonNetwork.connected)
		{
			GUILayout.Label(PhotonNetwork.connectionStateDetailed.ToString());
		}
		else if (PhotonNetwork.room == null)
		{
			// Create Room
			if (GUI.Button(new Rect(100, 100, 250, 100), "Start Server")) {
				PhotonNetwork.CreateRoom(roomName, new RoomOptions() { maxPlayers = 2, isOpen = true, isVisible = true}, lobbyName);
			}
			
			// Join Room
			if (roomsList != null) {
				for (int i = 0; i < roomsList.Length; i++) {
					if (GUI.Button(new Rect(100, 250 + (110 * i), 250, 100), "Join " + roomsList[i].name)) {
						PhotonNetwork.JoinRoom(roomsList[i].name);
					}
				}
			}
			
			
		}
	}
	
	void OnConnectedToMaster() {
	  PhotonNetwork.JoinLobby(lobbyName);
	}
	
	void OnReceivedRoomListUpdate()
	{
		Debug.Log ("Room was created");
		roomsList = PhotonNetwork.GetRoomList();
	}
	
	void OnJoinedLobby () {
		Debug.Log ("Joined Lobby");
	}
	
	void OnJoinedRoom ()
	{
		Debug.Log("Connected to Room");
		PhotonNetwork.Instantiate(player.name, Vector3.up * 5, Quaternion.identity, 0);
	}
}

thank you so much !

Any idea why OnJoinedRoom is not being called?

error CS0246: The type or namespace name RoomInfo' could not be found. Are you missing Photon.Realtime' using directive?
Why This Error? Could You Please Give A Solution