Update README.md

Updated to follow README.md flow with other SDKs.

Author: brandwe

README.md

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 IdentityModel Extensions for .Net provide assemblies that are interesting for web developers that wish to use federated identity providers for establishing the callers identity. 
 
+## Samples and Documentation
+
+[We provide a full suite of sample applications and documentation on GitHub](https://github.com/AzureADSamples) to help you get started with learning the Azure Identity system. This includes tutorials for native clients such as Windows, Windows Phone, iOS, OSX, Android, and Linux. We also provide full walkthroughs for authentication flows such as OAuth2, OpenID Connect, Graph API, and other awesome features. 
+
+## Community Help and Support
+
+We leverage [Stack Overflow](http://stackoverflow.com/) to work with the community on supporting Azure Active Directory and its SDKs, including this one! We highly recommend you ask your questions on Stack Overflow (we're all on there!) Also browser existing issues to see if someone has had your question before. 
+
+We recommend you use the "adal" tag so we can see it! Here is the latest Q&A on Stack Overflow for ADAL: [http://stackoverflow.com/questions/tagged/adal](http://stackoverflow.com/questions/tagged/adal)
+
+## Contributing
+
+All code is licensed under the Apache 2.0 license and we triage actively on GitHub. We enthusiastically welcome contributions and feedback. You can clone the repo and start contributing now. 
+
 ## Assemblies in this repo
 ----