Merge pull request #1281 from shapeblue/happy-holidays15

README: happy holidays!Happy holidays, let's merge this asap
cc @remibergsma @DaanHoogland @wido @wilderrodrigues @abhinandanprateek @jburwell @borisroman @miguelaferreira @Runseb @milamberspace @ke4qqq @karuturi @mlsorensen @mike-tutkowski @NuxRo @pdion891 @resmo @pyr and others

* pr/1281:
  README: happy holidays!

Signed-off-by: Rohit Yadav <[email protected]>

Author: rohityadavcloud

README.md

@@ -1,6 +1,6 @@
 # Apache CloudStack [![Build Status](https://travis-ci.org/apache/cloudstack.svg?branch=master)](https://travis-ci.org/apache/cloudstack) [![Coverity Scan Build Status](https://scan.coverity.com/projects/943/badge.svg)](https://scan.coverity.com/projects/943)
 
-![Apache CloudStack](tools/logo/apache_cloudstack.png)
+![Apache CloudStack](tools/logo/acsxmas.jpg)
 
 Apache CloudStack is open source software designed to deploy and manage large
 networks of virtual machines, as a highly available, highly scalable