📝 mention we don't bundle our own TypeScript

Author: basarat

README.md

@@ -60,9 +60,9 @@ For use on the command line, use the flag `npm install -g`.
 * **tsify** supports the TypeScript compiler's `-p, --project` option which allows you to specify the path that will be used when searching for the `tsconfig.json` file. You can pass either the path to a directory or to the `tsconfig.json` file itself.
 * **tsify** supports the following extra options:
 	* `--global` - This will set up **tsify** as a global transform.  See the [Browserify docs](https://github.com/substack/node-browserify#btransformtr-opts) for the implications of this flag.
-	* `--typescript` - This allows you to pass in a different TypeScript compiler, such as [NTypeScript](https://github.com/TypeStrong/ntypescript).  Note that when using the API, you can pass either the name of the alternative compiler or a reference to it:
+	* `--typescript` - By default we just do `require('typescript')` to pickup whichever version you installed. However, this option allows you to pass in a different TypeScript compiler, such as [NTypeScript](https://github.com/TypeStrong/ntypescript). Note that when using the API, you can pass either the name of the alternative compiler or a reference to it:
 		* `{ typescript: 'ntypescript' }`
-		* `{ typescript: require('typescript') }`, useful for when you want to use a different version of the official TypeScript compiler than the one packaged with tsify.
+		* `{ typescript: require('ntypescript') }`
 
 # Does this work with...