Add readme in Y2B small test case

YALES2BIO/testcase_small/README.md

 Test case presentation
 ======================
 
-The small test case of the template application is doing nothing but watching videos on Youtube all day long.
-It uses no DFT method, nor spectral method or anything else. The FFTW is widely not use for this case.
-
+This test case simulates the flow of 60 red blood cells (RBCs) in a channel.  
+Size of the channel: 201x7.935x30.015 µm^3 
+Velocity of the flow: 0.08m/s
 
 Case profile
 ------------
-
-A profiling of a small specfem3D test case performed on Occigen on 1 haswell node (64GB) is available in this folder:
-`profile_occigen-hsw.html"
+It runs on 1 node and 28 cores on OCCIGEN Broadwell architecture. The elapsed time is evaluted around 30 minutes. 
+A profiling of a small YALES2BIO test case performed on Occigen on 1 boradwell node (64GB) is available in this folder:
+`aps_report_20200116_161556.html"
 
 It has been generated using Intel APS (infos: https://software.intel.com/sites/products/snapshots/application-snapshot/)