updated README.md

README.md

@@ -3,6 +3,36 @@
 
 # Install
 
+clone project from git
+
 ```
 git clone https://git.tetalab.org/frtk/nodePong.git
+```
+
+nodejs dependencies: packages already included in the "node_modules" directory, or remove dir and install them manually
+
+```
+cd nodePong
+npm install fs
+npm install colors
+npm install express
+npm install http
+npm install socket.io
+```
+
+
+# Parameters
+
+- Server:
+Server parameters can be tweaked from "nodePong/server/server_params.js"   
+  - *port*: http and iostream port (default: 8042)
+
+
+
+# Run
+
+From the nodePong directory,
+
+```
+nodejs nodePong.js
 ```