{Doc} add readme for storage module

src/azure-cli/azure/cli/command_modules/storage/readme.md

@@ -0,0 +1,77 @@
+# Azure CLI Storage Module #
+This is a main module for storage features.
+
+### Included Features
+
+#### Management Policy:	
+Manage data policy rules associated with a storage account: [more info](https://docs.microsoft.com/azure/storage/common/storage-lifecycle-managment-concepts)\	
+*Examples:*	
+```	
+az storage account management-policy create \	
+    --account-name accountName \	
+    --resource-group groupName \	
+    --policy @{path}	
+```	
+
+#### Static Website:	
+Manage static website configurations: [more info](https://docs.microsoft.com/azure/storage/blobs/storage-blob-static-website)\	
+*Examples:*	
+```	
+az storage blob service-properties update \	
+    --account-name accountName \	
+    --static-website \	
+    --404-document error.html \	
+    --index-document index.html	
+```	
+
+#### Hierarchical Namespace:	
+Enable the blob service to exhibit filesystem semantics: [more info](https://docs.microsoft.com/azure/storage/data-lake-storage/namespace)\	
+*Examples:*	
+```	
+az storage account create \	
+    --name accountName \	
+    --resource-group groupName \	
+    --kind StorageV2 \	
+    --enable-hierarchical-namespace	
+```	
+
+#### File AAD Integration:	
+Enable AAD integration for Azure files, which will support SMB access: [more info](https://docs.microsoft.com/azure/storage/files/storage-files-active-directory-enable)\	
+*Examples:*	
+```	
+az storage account create \	
+    --name accountName \	
+    --resource-group groupName \	
+    --kind StorageV2	
+az storage account update \	
+    --name accountName \	
+    --resource-group groupName	
+```	
+
+#### Premium Blobs/Files:	
+Create premium blob/file storage accounts.\	
+More info:[premium blobs](https://azure.microsoft.com/blog/introducing-azure-premium-blob-storage-limited-public-preview/) [premium files](https://docs.microsoft.com/azure/storage/files/storage-files-introduction)\	
+*Examples:*	
+```	
+az storage account create \	
+    --name accountName \	
+    --resource-group groupName \	
+    --sku Premium_LRS \	
+    --kind BlockBlobStorage	
+az storage account create \	
+    --name accountName \	
+    --resource-group groupName \	
+    --sku Premium_LRS \	
+    --kind FileStorage	
+```	
+
+#### Customer-Controlled Failover:	
+Failover GRS/RA-GRS storage accounts from the primary cluster to the secondary cluster: [more info](https://docs.microsoft.com/azure/storage/common/storage-disaster-recovery-guidance)\	
+*Examples:*	
+```	
+az storage account show \	
+    --name accountName \	
+    --expand geoReplicationStats	
+az storage account failover \	
+    --name accountName	
+```