Test for too few commands.

isidore.sh

@@ -204,6 +204,12 @@ function build_project()
 
 set_config_vars
 
+if [ $# -lt 1 ]
+then
+	echo "No subcommand was specified. Use the 'help' subcommand."
+	exit 1
+fi
+
 case $1 in
 	new)
 		if [ $# -lt 2 ]
@@ -224,7 +230,7 @@ case $1 in
 					then
 						NEW_DIR="$i"
 					else
-						echo "Unknown argument for new '$i'. Use the 'help' command."
+						echo "Unknown argument for new '$i'. Use the 'help' subcommand."
 						print_usage
 						exit 1
 					fi
@@ -242,7 +248,7 @@ case $1 in
 	version)
 		echo "$PROJECT_NAME v$ISIDORE_VERSION";;
 	*)
-		echo "Unknown command $1. Use the 'help' command."
+		echo "Unknown command $1. Use the 'help' subcommand."
 		print_usage
 		exit 1;;
 esac