fixed readme typo

README.md

@@ -121,8 +121,8 @@ app.transform("sass", "text/css", (path, writeStream) => {
 	try {
 		var str = fs.readFileSync(path, "utf8");
 	} catch (err) {
-		ws.status = 404;
-		return ws.error(err);
+		writeStream.status = 404;
+		return writeStream.error(err);
 	}
 
 	try {

package.json

@@ -1,6 +1,6 @@
 {
   "name": "webframe",
-  "version": "0.4.0",
+  "version": "0.4.1",
   "description": "Web framework.",
   "main": "index.js",
   "scripts": {