Use cat to save code

update

@@ -79,7 +79,7 @@ main() {
     if [[ ! -z ${remote_ver} ]] && [[ ${local_ver} != ${remote_ver} ]]; then
         make_home
         echo '// HEADER' >${CODE_PATH}
-        echo -n ${code} >>${CODE_PATH}
+        cat <<<${code} >>${CODE_PATH}
         echo -n ${remote_ver} >${STATE_PATH}/version.txt
     fi
 }