Batch Apps migration content (#1)

Batch Apps migration content

README.md

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 # Azure Batch Apps Migration
 
-This repository contains information for customers migrating from Azure Batch
-Apps to Azure Batch.
+[Azure Batch](https://azure.microsoft.com/services/batch) is a fully-managed cloud service that enables you to run
+large-scale parallel and high performance computing (HPC) applications
+efficiently on Azure. With Batch, you can schedule compute-intensive
+work to run on a managed collection of virtual machines, and have Batch
+automatically scale compute resources to meet the needs of your jobs. 
+
+When Batch first became available on Azure, a number of additional
+capabilities like application packages, job splitter, and task processor
+were made available as part of a preview service named Batch Apps. The
+Batch Apps preview functionality is now available in Batch, so **the
+preview of Batch Apps will be discontinued on September 30, 2016**.
+To avoid downtime, workloads that use the Batch Apps preview need
+to be migrated to Batch by using the updated Batch API.
+
+This repository contains documentation that can help you with the migration
+of your Batch Apps workloads to Batch. The following items are included:
+
+* [Developer Migration Guide](developer-migration-guide.pdf): A step-by-step guide that can guide your through the process of migrating your Batch Apps workloads to Batch.
+* [Job Manager and Task Processor Templates for Azure Batch User Guide](azure-batch-templates-user-guide.pdf): A reference guide about two new Visual Studio templates that can help you to move your Batch Apps code to Batch with the least amount of effort.
+
+If you need additional information or advice when migrating your Batch Apps
+solution to Batch, or if you are having trouble diagnosing or fixing a 
+problem with your ported code, don't hesitate to reach out to the Batch team
+by posting on the [Batch MSDN forum](https://social.msdn.microsoft.com/forums/azure/home?forum=azurebatch).