Updated README.md and help output

DepotDownloader/Program.cs

@@ -391,6 +391,7 @@ namespace DepotDownloader
             Console.WriteLine("\t-manifest <id>\t\t\t- manifest id of content to download (requires -depot, default: current for branch).");
             Console.WriteLine($"\t-beta <branchname>\t\t\t- download from specified branch if available (default: {ContentDownloader.DEFAULT_BRANCH}).");
             Console.WriteLine("\t-betapassword <pass>\t\t- branch password if applicable.");
+            Console.WriteLine("\t-all-archs\t\t\t- download all architecture-specific depots when -app is used.");
             Console.WriteLine("\t-all-platforms\t\t\t- downloads all platform-specific depots when -app is used.");
             Console.WriteLine("\t-os <os>\t\t\t\t- the operating system for which to download the game (windows, macos or linux, default: OS the program is currently running on)");
             Console.WriteLine("\t-osarch <arch>\t\t\t\t- the architecture for which to download the game (32 or 64, default: the host's architecture)");

README.md

@@ -38,6 +38,7 @@ Parameter | Description
 -all-platforms			| downloads all platform-specific depots when -app is used.
 -os \<os>				| the operating system for which to download the game (windows, macos or linux, default: OS the program is currently running on)
 -osarch \<arch>			| the architecture for which to download the game (32 or 64, default: the host's architecture)
+-all-archs				| download all architecture-specific depots when -app is used.
 -all-languages			| download all language-specific depots when -app is used.
 -language \<lang>		| the language for which to download the game (default: english)
 -lowviolence			| download low violence depots when -app is used.