Added some documentation in readme :)

README.markdown

@@ -2,12 +2,39 @@
 
 Wheat is a blogging engine that reads a git repo full of markdown articles and presents them as a website.
 
+Wheat engine takes a local git repository path as a parameter
+
+	var wheat = require('wheat')("/path/to/my/repo");
+	// wheat is now a function which handles request and return response:
+	// wheat(req/*request*/, res/*response*/, next /*next handler to call for this request*/)
+
+Here's an example using Connect ( npm install connect ) to start a server, adapted from https://github.com/creationix/howtonode.org/blob/master/app.js :
+
+ var Connect = require('connect');
+
+ var repository = "/path/to/my/repo",
+ 	port = 3000;
+
+ Connect.createServer(
+   Connect.logger(),
+   Connect.conditionalGet(),
+   Connect.favicon(),
+   Connect.cache(),
+   Connect.gzip(),
+   require('wheat')(repository)
+ ).listen(port);
+
 ## How to Install
 
-Either manually install all the dependencies or use npm.  It's packaged nicely now.
+Either manually install all the dependencies or use npm.
 
     npm install wheat
 
+## Full example of how to use wheat :
+	$> npm install wheat
+	$> git clone https://github.com/creationix/howtonode.org.git
+	$> cd howtonode.org
+	$> node app.js
 
 That's it!  Checkout the wheat branch of howtonode.org for an example of how to use the library.