Add Apache Kafka as an input resource option

Author: spelluru

articles/stream-analytics/stream-analytics-add-inputs.md

@@ -15,7 +15,8 @@ Stream Analytics has first-class integration with four kinds of resources as inp
 - [Azure Event Hubs](https://azure.microsoft.com/services/event-hubs/)
 - [Azure IoT Hub](https://azure.microsoft.com/services/iot-hub/) 
 - [Azure Blob storage](https://azure.microsoft.com/services/storage/blobs/) 
-- [Azure Data Lake Storage Gen2](../storage/blobs/data-lake-storage-introduction.md) 
+- [Azure Data Lake Storage Gen2](../storage/blobs/data-lake-storage-introduction.md)
+- [Apache Kafka](stream-analytics-define-kafka-input.md)
 
 These input resources can live in the same Azure subscription as your Stream Analytics job, or from a different subscription.
 
@@ -42,4 +43,4 @@ For more information about reference data inputs, see [Using reference data for
 
 ## Next steps
 > [!div class="nextstepaction"]
-> [Quickstart: Create a Stream Analytics job by using the Azure portal](stream-analytics-quick-create-portal.md)
+> [Quickstart: Create a Stream Analytics job by using the Azure portal](stream-analytics-quick-create-portal.md)