Added Think/Cloud slides and updated read-me

Author: nijaba

README.md

@@ -1,6 +1,15 @@
 
 ## Think
 
+### Cloud
+
+- [SYGEO Case Study](https://github.com/OWF/Slides-2011/raw/master/think/cloud/CLOUD-AlainKeravel-HEC-SYGEO.pptx) - Alain Keravel, HEC
+- [Orange Cloud et OW2 Case study](https://github.com/OWF/Slides-2011/raw/master/think/cloud/CLOUD-AlexandreLefebvre-Orange-Cloud-OW2-v2.pdf) - Alexandre Lefebvre, Orange
+- [State of cloud Keynote](https://github.com/OWF/Slides-2011/raw/master/think/cloud/CLOUD-BillMcNee-Saugatuk-OWF-CloudBusinessCloudIT-22Sept2011-FINAL.pdf) - Bill McNee, Saugatuk
+- [IFPEN Proactive Case Study](https://github.com/OWF/Slides-2011/raw/master/think/cloud/CLOUD-DenisCaromel-ActiveEon-ProActive-OWF-IFPEN-2011-Sept-23-FinalShort.pdf) - Denis Caromel, Activeon
+- [Build to cloud using Open Source](https://github.com/OWF/Slides-2011/raw/master/think/cloud/CLOUD-JeanFrancoisCaenen-Capgemini-Build To Cloud using Open Source technologies.pdf) - Jean-Francois Caenen, CapGemini
+- [Oludap case study](https://github.com/OWF/Slides-2011/raw/master/think/cloud/CLOUD-VittorioAmosZiparo-Algorithmica-oludap_owf.pdf) - Vittorio Amos Ziparo, Algorithmica
+
 ## Code
 
 ### Java Track