update README.md

gfx · gfx · commit cec7fc53574b · 2014-11-26T07:29:34.000+09:00
diff --git a/README.md b/README.md
@@ -36,6 +36,14 @@ And then execute:
 
 Just add a `.js.ts` file in your `app/assets/javascripts` directory and include it just like you are used to do.
 
+Configurations:
+
+```
+# Its defaults are `--target ES5 --noImplicitAny`.
+Typescript::Rails::Compiler.default_options = [ ... ]
+```
+
+
 ## Contributing
 
 1. Fork it
