Update README.md

README.md

@@ -14,13 +14,13 @@ You have to up set the following variables:
 Data in path_data need to be stored as follow:
 
 
-*  data
-    - ens_id_1
+*  data (folder)
+    - ens_id_1 (folder)
         - mesons.dat
         - ms.dat
         - ms1.dat
         - pbp.dat
-    - ens_id_2
+    - ens_id_2 (folder)
         - r0_mesons.dat
         - r1_mesons.dat
         - r0_ms.dat