Adds the --template option to obimultiplex

Former-commit-id: 349e9f278abd6a6c258f31d99ea04853a79c62de

cmd/obitools/obimultiplex/main.go

@@ -1,6 +1,7 @@
 package main
 
 import (
+	"fmt"
 	"os"
 
 	log "github.com/sirupsen/logrus"
@@ -31,6 +32,16 @@ func main() {
 
 	_, args := optionParser(os.Args)
 
+	if obimultiplex.CLIAskConfigTemplate() {
+		fmt.Print(obimultiplex.CLIConfigTemplate())
+		os.Exit(0)
+	}
+
+	if !obimultiplex.CLIHasNGSFilterFile() {
+		log.Error("You must provide a tag list file following the NGSFilter format")
+		os.Exit(1)
+	}
+
 	sequences, err := obiconvert.CLIReadBioSequences(args...)
 
 	if err != nil {