expression setup documentation

yaap/README.md

@@ -120,7 +120,9 @@ The yaap/wire plugin will be called after the bean was created. That means, the
 As a workaround, use a separate initialize-method (using the [init-facade](https://github.com/cujojs/wire/blob/master/docs/configure.md#init-methods) of wire).
 
 ##Express.js integration
-There are also out-of-the-box annotations included for creating webapps in a springMVC-like manner. A simple example of a service:
+There are also out-of-the-box annotations included for creating webapps in a springMVC-like manner. 
+More information on how to setup this integration is available [here](docs/express.md)
+A simple example of a service:
 
 ```js
 MyService.prototype = {

yaap/docs/express.md

@@ -0,0 +1,26 @@
+#Express.js integration
+If you want to use the `yaap/wire/express` plugin, you need to supply an express application to the plugin. This is done during wire-setup as follows:
+Your wire-context:
+```js
+{
+		app: { create: 'express',
+			   init:{use:[express.bodyParser()]}, 
+			   ready:{listen:[8000]}
+		},
+        myService:  { create: './MyService' }, 
+
+        plugins: [
+			{module: "yaap/wire"},
+			{module: "yaap/wire/express",server: "app"}
+        ]
+}
+
+```
+
+The setup of the application is exemplary and can also be done somewhere else.
+The yaap/wire/express accepts the name of a reference which will later be resolved against the wire-context as `server`-parameter.
+
+##yaap/wire/express options
+There are several options that can be configured during plugin-setup. 
+*`server` (mandatory): string name of the express-application bean
+*`view` (optional, default: "jade"): string of the extension that will be added to view-names. These extensions determine the template-engine in express.