Squashed 'ClientRuntimes/Java/' changes from f7a6b01..a6eef1f

a6eef1f Merge pull request Azure#5 from Azure/jianghaolu-patch-1
2c03d76 Update README
78359ef Merge pull request Azure#4 from jianghaolu/javavnext
f1d7b46 [Azure#957] Merge pull request Azure#3 from jianghaolu/javavnext

git-subtree-dir: ClientRuntimes/Java
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README.md

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-# autorest-clientruntime-for-java
+[![Build Status](https://travis-ci.org/Azure/autorest-clientruntime-for-java.svg?branch=javavnext)](https://travis-ci.org/Azure/autorest-clientruntime-for-java)
+
+# AutoRest Client Runtimes for Java
 The runtime libraries for AutoRest generated Java clients.
+
+## Repository structure
+
+### client-runtime
+This is the generic runtime. You will need this for AutoRest generated library using Java code generator.
+
+### azure-client-runtime
+This is the runtime with Azure specific customizations. You will need this for AutoRest generated library using Azure.Java code generator.
+
+### azure-client-authentication
+This package provides access to Active Directory authentication on JDK using OrgId or application ID / secret combinations. Multi-factor-auth is currently not supported.
+
+### azure-android-client-authentication
+This package provides access to Active Directory authentication on Android. You can login with Microsoft accounts, OrgId, with or without multi-factor-auth.
+
+## Build
+To build this repository, you will need maven 2.0+ and gradle 1.6+.
+Maven is used for [Java SDK](https://github.com/Azure/azure-sdk-for-java) when it's used as a submodule in there. Gradle is used for [AutoRest](https://github.com/Azure/autorest) when it's used as a submodule in there.