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README.md

@@ -107,11 +107,24 @@ Serve static files.
   files in the `web` directory under `/static`, so `/static/script.js` will
   serve `web/script.js`.
 
-### Transformations - app.transform(extension, mime, function)
+### Transformations - app.transform(extension, mime, func)
 
 Webframe has a way to transform files of one file type to an other, for example
 transforming typescript into javascript, or sass into CSS.
 
+* `extension`: The file extension to transform.
+* `mime`: The result mime type.
+* `func`: function(path, writeStream). The transform function.
+	* `writeStream.headersSent`: Whether headers have been sent or not.
+	* `writeStream.status`: The status code. Default: 200 (or 500 for errors)
+	* `writeStream.headers`: An object containing the headers to be sent.
+	  Default: `{ "content-type": <mime> }`
+	* `writeStream.write`: function(data). Write response data.
+	* `writeStream.end`: function([data]). End the request, optionally with
+	  response data.
+	* `writeStream.error`: function(err). Log an error, respond with status
+	  code 500 (or the content of `writeStream.status` if it's not 200).
+
 Example (assumes you have the node-sass module installed):
 
 ```

package.json

@@ -1,6 +1,6 @@
 {
   "name": "webframe",
-  "version": "0.4.1",
+  "version": "0.4.2",
   "description": "Web framework.",
   "main": "index.js",
   "scripts": {