lib/a_star: adds doc to Link class

Signed-off-by: Alexis Laferrière <alexis.laf@xymus.net>

diff --git a/lib/a_star.nit b/lib/a_star.nit
index 6876820..c0c0962 100644 (file)
--- a/lib/a_star.nit
+++ b/lib/a_star.nit
@@ -218,6 +218,7 @@ class Node
        end
 end
 
+# Link between two nodes and associated to a graph
 class Link
        type N: Node
        type L: Link