device sdk support for node 12

Author: danhellem

includes/iot-develop-send-telemetry-iot-hub-node.md

@@ -24,7 +24,7 @@ Install the following prerequisites on your development machine except where not
 
 - If you don't have an Azure subscription, [create one for free](https://azure.microsoft.com/free/?WT.mc_id=A261C142F) before you begin.
 - [Git](https://git-scm.com/downloads).
-- [Node.js](https://nodejs.org) version 10 or later. To check your node version run `node --version`.
+- [Node.js](https://nodejs.org) version 12 or later. To check your node version run `node --version`.
 - [Azure IoT Explorer](https://github.com/Azure/azure-iot-explorer/releases): Cross-platform, GUI-based utility to monitor and manage Azure IoT. If you're using Raspberry Pi as your development platform, we recommend that you install IoT Explorer on another computer. If you don't want to install IoT Explorer, you can use Azure CLI to perform the same steps. 
 - Azure CLI. You have two options for running Azure CLI commands in this quickstart:
     - Use the Azure Cloud Shell, an interactive shell that runs CLI commands in your browser. This option is recommended because you don't need to install anything. If you're using Cloud Shell for the first time, log into the [Azure portal](https://portal.azure.com). Follow the steps in [Cloud Shell quickstart](../articles/cloud-shell/quickstart.md) to **Start Cloud Shell** and **Select the Bash environment**.

includes/quickstart-control-device-node.md

@@ -15,7 +15,7 @@ This quickstart uses two Node.js applications: a simulated device application th
 
 * An Azure account with an active subscription. [Create one for free](https://azure.microsoft.com/free/?ref=microsoft.com&utm_source=microsoft.com&utm_medium=docs&utm_campaign=visualstudio).
 
-* [Node.js 10+](https://nodejs.org).
+* [Node.js 12+](https://nodejs.org).
 
     You can verify the current version of Node.js on your development machine using the following command: