Added media service portal sample code
integrate feedback for update method name/comments format
Merge branch 'master' of https://github.com/WindowsAzure/azure-sdk-for-java-samples
Merge branch 'master' of https://github.com/xuezhai/azure-sdk-for-java-samples

Conflicts:
	MediaServicesEncryptionSample/src/test/java/ext/microsoft/windowsazure/MediaServicesEncryptionSample.java