Update ReadMe.md

ReadMe.md

@@ -4,8 +4,11 @@ Iriutils library                         {#mainpage}
 ## Description
 This set of tools provide basic functionalities that are generally needed in many
 applications. These utilities include mutual exclusion objects, exceptions, threads,
-logic events and also generic communication devices. Next, a brief description of
-each one is provided.
+logic events and also generic communication devices. 
+
+
+<details><summary>Utilities description</summary>
+<p>
 
 ### Mutex
 
@@ -68,6 +71,9 @@ time in human readable format.
 There exist an example which uses all of class methods. Also in a bad use
 which reach to an exception.
 
+</p>
+</details>
+
 ## Installation
 
 * Add the labrobotica repository if it is not already added: