[doc] add image in readme

README.md

@@ -3,6 +3,9 @@ This application allow users to upload contact files in CSV format and process t
 to generate a unified contact file. The contacts are associated to the user who imported
 them into the platform. And the application validate some fields of the .csv file. The test .csv file used in tests [test.csv](https://github.com/gbhgit/ruby-app/blob/Documentation/15/test.csv) 
 
+![picture](https://user-images.githubusercontent.com/38015533/132122862-78e3f753-aa0c-4ade-866e-f800efed8ece.png)
+
+
 ### Recomendations
   - SQLite3
   - Ruby .2.5.8+ 
@@ -66,4 +69,4 @@ contacts that I have imported and that were successfully created should be displ
 :heavy_check_mark: Process the CSV file in a background job. I used the gem 'sidekiq'.
 
 ### My Personal Bonus Features
-+ All project was developed using the **kanban of github** as shown in page [https://github.com/gbhgit/ruby-app/projects/1](https://github.com/gbhgit/ruby-app/projects/1)
++ All project was developed using the **kanban of github** as shown in page [https://github.com/gbhgit/ruby-app/projects/1](https://github.com/gbhgit/ruby-app/projects/1)