Updates to documentation

documentation/src/main/resources/changelog.txt

+-------------------------------------------
+Changes from CloudSim 3.0.3 to CloudSim 4.0
+-------------------------------------------
+
+WHAT'S NEW
+----------
+
+- Added support for Container virtualization
+- Lots of bugfixes
+
+
 -------------------------------------------
 Changes from CloudSim 3.0.2 to CloudSim 3.0.3
 -------------------------------------------

documentation/src/main/resources/release_notes.txt

 
-            Cloudsim Project to Release CloudSim Toolkit 3.0
+            Cloudsim Project to Release CloudSim Toolkit 4.0
 
 The Cloudbus Project at The University of Melbourne, Australia  is proud to announce the
 release of the new version of its Cloud simulation software, the CloudSim.
 
-One year has passed since last version of CloudSim was released. Cloud computing now is
+Four years has passed since last major version of CloudSim was released. Cloud computing now is
 mainstream, and has been heavily adopted by different industries. It is also omnipresent in
 conferences and journals from diverse fields such as high performance computing, grid computing,
 distributed systems, operating systems, software engineering, databases and so on. CloudSim has
-been present in publications in all the above fields.
-
-To help in further developments in the field of Cloud computing regardless the main area of
-application, new features and improvements were added to CloudSim 3.0. Having the project
-hosted in Google code allowed us to have an enhanced feedback from users, via issue tracking
-and group discussion. Based on this feedback, we could identify bugs, concepts that where being
-misinterpreted by users and features of little significance and complexity. In response to this
-feedback, we fixed all the identified bugs, clarified confusing aspects of the tool, and removed
-features that were proven to be unpopular with users and just were making the APIs confusing.
-
-This version of CloudSim brings enhanced modelling of power-aware and energy efficient Cloud
-computing, and also a new package allowing modelling of internal data center topologies and
-message-passing applications.
+been present in publications in all the above fields. New applications of Cloud computing are emerging
+such as Internet of Things and Big Data, and new technologies are being incorporated to the fabric
+of Cloud data centers such as Container virtualization. This version of CloudSim acknowledges these
+advances by adding support for virtualization of Container as a Service features, and also solves
+many bugs identified along the years.
 
 We encourage the community to keep collaborating with us by notifying us about any identified 
 bugs, providing feedback on new features you would like to have in future versions of the toolkit, 
@@ -29,7 +21,7 @@ homepage. We will also be happy to list on our homepage scientific peer-reviewed
 results were obtained with CloudSim. 
 
 As in its previous version, all components developed as part of the CloudSim Toolkit are open
-source released under the LGPL license to encourage innovation and pass full freedom to our users.
+source released under the Apache license to encourage innovation and pass full freedom to our users.
 
 We would like to thanks all the support we have received from users all around the world. Your
 contribution in finding and reporting bugs, proposing (and developing) new features, and even in
@@ -39,4 +31,4 @@ To download the CloudSim software, please visit the Cloudbus Project web site at
 http://www.cloudbus.org/cloudsim/
 
 The CloudSim Team
-Melbourne, January 2012
+Melbourne, May 2016