README.md in vcloud-walker-3.2.3 vs README.md in vcloud-walker-3.3.0

@@ -50,44 +50,10 @@
 describes the entire organization, which includes edgegateway, catalogs,
 networks and vdcs within an organization.
 
 ## Credentials
 
-vCloud Walker is based around [fog](http://fog.io/). To use it you'll need to give it
-credentials that allow it to talk to a vCloud Director environment.
-
-1. Create a '.fog' file in your home directory.
-
-  For example:
-
-      test_credentials:
-        vcloud_director_host: 'host.api.example.com'
-        vcloud_director_username: 'username@org_name'
-        vcloud_director_password: ''
-
-2. Obtain a session token. First, curl the API:
-
-        curl -D- -d '' \
-            -H 'Accept: application/*+xml;version=5.1' -u '<username>@<org_name>' \
-            https://<host.api.example.com>/api/sessions
-
-  This will prompt for your password.
-
-  From the headers returned, the value of the `x-vcloud-authorization` header is your
-  session token, and this will be valid for 30 minutes idle - any activity will extend
-  its life by another 30 minutes.
-
-3. Specify your credentials and session token at the beginning of the command. For example:
-
-        FOG_CREDENTIAL=test_credentials \
-            FOG_VCLOUD_TOKEN=AAAABBBBBCCCCCCDDDDDDEEEEEEFFFFF= \
-            vcloud-walk organization
-
-  You may find it easier to export one or both of the values as environment variables.
-
-  **NB** It is also possible to sidestep the need for the session token by saving your
-  password in the fog file. This is **not recommended**.
-
+Please see the [vcloud-tools usage documentation](http://gds-operations.github.io/vcloud-tools/usage/).
 
 ### Output
 
 Walker can output data in JSON or YAML format. The default output format is JSON.
 You can use command line option ```--yaml``` for yaml output.