Added "ALLIANCE_VANGUARD" to faction_ids and faction_strings.

diff --git a/Constants.lua b/Constants.lua
index 07778fc..3ccb188 100644
--- a/Constants.lua
+++ b/Constants.lua
@@ -163,6 +163,7 @@ private.faction_ids = {
 	["SCALE_OF_SANDS"]	= 990,
 	["LOWERCITY"]		= 1011,
 	["ASHTONGUE"]		= 1012,
+	["ALLIANCE_VANGUARD"]	= 1037,
 	["HORDE_EXPEDITION"]	= 1052,
 	["KALUAK"]		= 1073,
 	["SHATTEREDSUN"]	= 1077,
@@ -198,6 +199,7 @@ private.faction_strings = {
 	[990]	= "SCALE_OF_SANDS",
 	[1011]	= "LOWERCITY",
 	[1012]	= "ASHTONGUE",
+	[1037]	= "ALLIANCE_VANGUARD",
 	[1052]	= "HORDE_EXPEDITION",
 	[1073]	= "KALUAK",
 	[1077]	= "SHATTEREDSUN",