Add opencc-wasm to README (#1020)

Updated WebAssembly section with new package and website links.

Author: frankslin

README.md

@@ -132,7 +132,9 @@ Document 文檔: https://byvoid.github.io/OpenCC/
 * Android: [android-opencc](https://github.com/qichuan/android-opencc)
 * PHP: [opencc4php](https://github.com/nauxliu/opencc4php)
 * Pure JavaScript: [opencc-js](https://github.com/nk2028/opencc-js)
-* WebAssembly: [wasm-opencc](https://github.com/oyyd/wasm-opencc)
+* WebAssembly:
+    * [opencc-wasm](https://www.npmjs.com/package/opencc-wasm) ([website](https://opencc.js.org/))
+    * [wasm-opencc](https://github.com/oyyd/wasm-opencc)
 * Browser Extension: [opencc-extension](https://github.com/tnychn/opencc-extension)
 * Go (Pure): [OpenCC for Go](https://github.com/longbridge/opencc)
 * Dart (native-assets): [opencc-dart](https://github.com/lindeer/opencc-dart)