support nodejs (#438)

scripts/nodejs/README.md

@@ -0,0 +1,9 @@
+# Introduction
+
+Text-to-speech and speech-to-text with [Next-gen Kaldi](https://github.com/k2-fsa/).
+
+It processes everything locally without accessing the Internet.
+
+Please refer to
+https://github.com/k2-fsa/sherpa-onnx/tree/master/nodejs-examples
+for examples.