Add version command.

isidore.sh

@@ -24,6 +24,7 @@ ISIDORE_CONFIG_DIR_OPTIONS=(
 ISIDORE_AUTHOR_NAME=""
 
 PROG_NAME=$0
+PROJECT_NAME="Isidore"
 
 ##
 # Create the configuration file. This function is called if it does not already
@@ -153,6 +154,8 @@ case $1 in
 		clean_project;;
 	help)
 		print_help;;
+	version)
+		echo "$PROJECT_NAME v$ISIDORE_VERSION";;
 	*)
 		echo "Unknown command $1. Use the 'help' command."
 		print_usage;;