Update 2_developpement.md

2_developpement.md

@@ -3,26 +3,27 @@ Developpement
 
 source management
 -----------------
-
+```
 pacman -S git mercurial
+```
 
 graphic tools
 -------------
-
+```
 pacman -S tk tig meld doxygen graphviz ctags
+```
 
 python
 ------
-
+```
 pacman -S python-pip python2-pip
+```
 
 Builder
 -------
-
+```
 pacman -S clang gcc cmake
-  
 pip install lutin --user
-  
 pip install pillow --user
-
+```