diff --git a/README.md b/README.md
index 31991c0..de2141f 100644
--- a/README.md
+++ b/README.md
@@ -2,6 +2,10 @@
 
 ## Rules
 
+* Game has 1 grid, 2 players 
+* Each player choose one column and insert a piece 
+* The first player to connect 4 checkers in a row is the winner.
+
 ## Getting started
 
 ### Requirements 
@@ -15,6 +19,13 @@
 git clone https://codefirst.iut.uca.fr/git/yohann.breuil/Puissance4.git
 ```
 
+### Open in XCode
+
+```sh
+cd Src
+open PuissanceQuatre.xcworkspace
+```
+
 ### Build model  
 
 ```sh