add some placeholder READMEs

Author: Remi-Gau

docs/README.md

@@ -0,0 +1 @@
+# Documentation

lib/README.md

@@ -0,0 +1 @@
+# External libraries and dependencies

subfun/doDotMo.m

@@ -30,12 +30,14 @@
         [dots] = updateDots(dots, cfg);
 
         %% Center the dots
+        
         % We assumed that zero is at the top left, but we want it to be
         %  in the center, so shift the dots up and left, which just means
-        %  adding half of the screen width in pixel to both the x and y direction.
+        %  adding half of the screen width in pixel to both the x and y direction.       
         thisEvent.dot.positions = (dots.positions - cfg.dot.matrixWidth / 2)';
 
         %% make textures
+        
         dotTexture('make', cfg, thisEvent);
 
         apertureTexture('make', cfg, thisEvent);

tests/README.md

@@ -0,0 +1,5 @@
+# Unit tests folder
+
+To be run using mox unit.
+
+Code coverage can be estimated with Mocov.