Imp Online Subsystem, Imp demo steam integration

Config/DefaultEngine.ini

@@ -268,3 +268,15 @@ ManualIPAddress=
 DefaultSoundClassName=/Engine/EngineSounds/SFX.SFX
 DefaultMediaSoundClassName=/Engine/EngineSounds/SFX.SFX
 
+[/Script/Engine.GameEngine]
++NetDriverDefinitions=(DefName="GameNetDriver",DriverClassName="OnlineSubsystemSteam.SteamNetDriver",DriverClassNameFallback="OnlineSubsystemUtils.IpNetDriver")
+
+[OnlineSubsystem]
+DefaultPlatformService=Steam
+
+[OnlineSubsystemSteam]
+bEnabled=true
+SteamDevAppId=4756170
+
+[/Script/OnlineSubsystemSteam.SteamNetDriver]
+NetConnectionClassName="OnlineSubsystemSteam.SteamNetConnection"

FMVUnreal.uproject

@@ -14,6 +14,10 @@
 		{
 			"Name": "CommonUI",
 			"Enabled": true
+		},
+		{
+			"Name": "OnlineSubsystemSteam",
+			"Enabled": true
 		}
 	]
 }