Color setup + Doc update

README.md

@@ -47,16 +47,45 @@ $ ./sdl-glisseur_10
 $ top  (or ps ax)  ---> get PID of the glider proccess
 $ kill -9 PID
 ```
-or try to CTRL+C many times
+or try many times to close window
 
 - - - - - - -
 # Adjust image size
-Update WIDTH and HEIGHT on lines 36 and 37
+
+Update WIDTH and HEIGHT on
 ```
+// Canvas height and width //
 #define WIDTH 640
 #define HEIGHT 480
 ```
 
+- - - - - - -
+# Set up the 4 colors
+
+```
+// Canvas height and width //
+#define WIDTH 640
+#define HEIGHT 480
+```
+
+- - - - - - -
+# Set up the 4 colors
+```
+// 4 colors definition //
+#define COLOR_0_R 254
+#define COLOR_0_G 254
+#define COLOR_0_B 254
+#define COLOR_1_R 254
+#define COLOR_1_G 0
+#define COLOR_1_B 0
+#define COLOR_2_R 0
+#define COLOR_2_G 254
+#define COLOR_2_B 0
+#define COLOR_3_R 0
+#define COLOR_3_G 0
+#define COLOR_3_B 254
+```
+
 - - - - - - - 
 # Change glider moving rules
 Update the direction adding parameters, check examples from line 158 to line 205