diff --git a/README.md b/README.md
index 588bd6d..e05c684 100644
--- a/README.md
+++ b/README.md
@@ -19,7 +19,7 @@ Before running or building it is recommended that you configure the server in co
 Documentation for how to operate and how to customize your server are coming soon!
 
 ## Dev Documentation
-For development see [api.md](doc/api.md)
+For development see [api.md](doc/api.md) and [contribute.md](doc/contribute.md)
 
 ## Contributors
 
diff --git a/doc/contribute.md b/doc/contribute.md
new file mode 100644
index 0000000..2cdb8d3
--- /dev/null
+++ b/doc/contribute.md
@@ -0,0 +1,36 @@
+# Contribute
+
+## Architecture of the project
+
+Directory architecture :
+
+* app.js : specific settings and actually start the server
+* index.js : contain the generic server implementation
+* lib/ : contain the classes and functions used in the plugins
+  * serverPlugins/ : server plugins that do things general to the server, 
+  properties and method are added to the server object in them
+  * playerPlugins/ : player plugins that do things for each player, 
+  properties and method are added to the player object in them
+  
+Structure of a server plugin :
+
+```js
+module.exports=inject;
+
+function inject(serv)
+{
+  // add methods and properties to serv
+}
+```
+
+Structure of a player plugin :
+
+```js
+module.exports=inject;
+
+function inject(serv,player)
+{
+  // add methods and properties to player
+  // you can use serv, but you shouldn't add things to it here
+}
+```
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