Added the branch parameter to game script with popular branches

CounterStrikeGlobalOffensive/csgoserver

@@ -78,6 +78,11 @@ githubbranch="master"
 # Steam
 appid="740"
 
+# Steam App Branch Select
+# Allows to opt into the various Steam app branches. Default branch is "".
+# Example: "-beta 1.35.4.4"
+branch=""
+
 # Server Details
 servicename="csgo-server"
 gamename="Counter Strike: Global Offensive"

GarrysMod/gmodserver

@@ -29,6 +29,11 @@ pushbullettoken="accesstoken"
 steamuser="anonymous"
 steampass=""
 
+# Steam App Branch Select
+# Allows to opt into the various Steam app branches. Default branch is "".
+# Example: "-beta prerelease "
+branch=""
+
 # Workshop Variables
 # http://wiki.garrysmod.com/page/Workshop_for_Dedicated_Servers
 workshopauth=""

NaturalSelection2/ns2server

@@ -62,6 +62,11 @@ githubbranch="master"
 # Steam
 appid="4940"
 
+# Steam App Branch Select
+# Allows to opt into the various Steam app branches. Default branch is "".
+# Example: "-beta beta"
+branch=""
+
 # Server Details
 servicename="ns2-server"
 gamename="Natural Selection 2"