Update documentation for Swift Keystone

Storage-backend-examples.md

@@ -84,7 +84,7 @@ jclouds.endpoint=https://objects.dreamhost.com
 
 ### Swift (non-Keystone)
 
-~~An example using remote swift with non-keystone v1 auth (default accounts created with Swift-In-A-Box instructions):~~
+outdated?!
 ```
 s3proxy.endpoint=http://127.0.0.1:8080
 s3proxy.authorization=aws-v2
@@ -99,16 +99,18 @@ jclouds.credential=testing
 
 ### Swift (Keystone v2.0)
 
+All $OS_ variables can be retrieved from your tenant specific openrc.sh file.
+
 ```
 s3proxy.endpoint=http://127.0.0.1:8080
 s3proxy.authorization=aws-v2
 s3proxy.identity=local-identity
 s3proxy.credential=local-credential
 jclouds.provider=openstack-swift
-jclouds.endpoint=$OS_AUTH_URL
-jclouds.region=$OS_REGION_NAME
-jclouds.identity=$OS_TENANT_NAME:$OS_USERNAME
-jclouds.credential=$OS_PASSWORD
+jclouds.endpoint=$OS_AUTH_URL (e.g. https://keystone.example.com/v2.0/)
+jclouds.region=$OS_REGION_NAME (e.g. paris1)
+jclouds.identity=$OS_TENANT_NAME:$OS_USERNAME (e.g. production:user1)
+jclouds.credential=$OS_PASSWORD (e.g. password)
 ```
 
 ### SoftLayer