Adding the freezer logo to the README

Change-Id: I789f10d4a8dda2cf1658546a560f270dc68cf72f

CREDITS.rst

@@ -20,8 +20,11 @@ Contributors
 -  Guillermo Ramirez Garcia
 -  Zahari Zahariev
 -  Eldar Nugaev
--  Saad Zaher Saad
+-  Saad Zaher
 -  Samuel Bartel
+-  Jonas Pfannschmidt
+-  Deklan Dieterly
+-  Pierre Mathieu
 
 Credits
 =======
@@ -36,4 +39,4 @@ Credits
 -  Matt Joyce
 -  Anupriya Ramraj
 -  HP OpsAuto Team
-
+-  Jon Otero Fernández (logo)

README.rst

@@ -2,6 +2,8 @@
 Freezer
 =======
 
+.. image:: freezer_logo.jpg
+
 Freezer is a Backup Restore DR as a Service platform that helps you to automate the data backup and
 restore process.
 
@@ -1009,3 +1011,5 @@ this will print all options to the screen you direct the output to a file if you
 
     oslo-config-generator --namespace freezer --namespace oslo.log --output-file etc/agent.conf.sample
 
+
+The Freezer logo is released under the licence Attribution 3.0 Unported (CC BY3.0).