Grouped commands help description

command/server.go

@@ -1,13 +1,38 @@
 package command
 
-import "github.com/mitchellh/cli"
+import (
+	"strings"
+
+	"github.com/mitchellh/cli"
+)
 
 type ServerCommand struct {
 	Meta
 }
 
 func (f *ServerCommand) Help() string {
-	return "This command is accessed by using one of the subcommands below."
+	helpText := `
+Usage: nomad server <subcommand> [options] [args]
+
+  This command groups subcommands for interacting with Nomad servers. Users can
+  list Servers, join a server to the cluster, and force leave a server.
+
+  List Nomad servers:
+
+      $ nomad server members
+
+  Join a new server to another:
+
+      $ nomad server join "IP:Port"
+
+  Force a server to leave:
+
+      $ nomad server force-leave <name>
+
+  Please see the individual subcommand help for detailed usage information.
+`
+
+	return strings.TrimSpace(helpText)
 }
 
 func (f *ServerCommand) Synopsis() string {