Add minimal mention of Wasm/TS support in docs

Author: mutagene

README.md

@@ -20,6 +20,7 @@ Djinni generator parses an interface definition file and generates:
 - Objective-C++ code to convert between C++ and Objective-C
 - Python and C code to convert between C++ and Python over CFFI
 - C++/CLI code to convert between C++ and C#
+- C++ code to convert between WebAssembly and TS/JS
 
 
 ## Installation
@@ -86,3 +87,5 @@ The code in this repository is in large portions copied from [dropbox/djinni](ht
 - Jacob Potter
 - Iulia Tamas
 - Andrew Twyman
+
+WebAssembly support is borrowed in large part from [snapchat/djinni](https://github.com/snapchat/djinni).

docs/cli-usage.md

@@ -145,6 +145,14 @@ djinni \
 | `--cppcli-namespace ...`               | The namespace name to use for generated C++/CLI classes.                   |
 | `--cppcli-include-cpp-prefix <prefix>` | The prefix for `#include` of the main C++ header files from C++/CLI files. |
 
+### WebAssembly/TS/JS
+
+| Argument                               | Description                                                                |
+|----------------------------------------|----------------------------------------------------------------------------|
+| `--wasm-out <out-folder>`              | WebAssembly bridge code output folder   |
+| `--ts-out <out-folder>`                | Path to the Typescript type definitions output folder                   |
+| `--ts-module <module>`                 | Name of the module for the Typescript types. `module.ts` by default. |
+
 
 ### Yaml Generation