add image and instructions to sns

content/integrations/awssns.md

@@ -2,17 +2,37 @@
 title: Datadog-AWS SNS Integration
 integration_title: AWS SNS
 kind: integration
-doclevel: basic
+newhlevel: true
 git_integration_title: amazon_sns
 ---
+# Overview
 
+![SNS Dashboard](/static/images/snsdashboard.png)
 
 Connect SNS to Datadog in order to:
 
 * See SNS messages as events in your stream
 * Send alert and event notifications to SNS
 
-### Metrics
+# Installation
+
+## Receiving SNS Messages In the Event Stream
+
+1.  On the Topics section of the SNS Management console, select the desired topic and click Create Subscription
+1.  Select https and enter the following webhook url:
+
+        https://app.datadoghq.com/intake/webhook/sns?api_key=<API KEY>
+
+# Configuration
+
+## Sending SNS Notifications from Datadog
+
+1.  Configure the AWS account that is associated with an SNS service on the AWS integration tile
+2.  Install the SNS integration
+3.  Datadog will detect your configured SNS topics and demonstrate the @ notifications you can use below (e.g., "@sns-topic-name")
+
+
+# Metrics
 
 <%= get_metrics_from_git()%>