Added live refresh of Leaderboard

not done though; still need to switch to display name instead of
PlayfabID
also need to post stat to leaderboard (waiting for client stat post)
Merge branch 'master' of https://github.com/PlayFab/UnityPlayFab_AngryBots

Conflicts:
	Assets/PlayFabAngryBots/Scenes/AngryBots.unity