Add ListUserPolicies to IAM API docs and CLI examples

AWS-IAM-CLI.md

@@ -244,6 +244,24 @@ aws --endpoint $AWS_ENDPOINT iam put-user-policy \
   --policy-document file://readwrite-policy.json
 ```
 
+### List User Policies
+
+List the names of inline policies attached to a user:
+
+```bash
+aws --endpoint $AWS_ENDPOINT iam list-user-policies --user-name bob
+```
+
+Output:
+```json
+{
+    "PolicyNames": [
+        "ReadOnlyPolicy"
+    ],
+    "IsTruncated": false
+}
+```
+
 ### Get User Policy
 
 ```bash

Amazon-IAM-API.md

@@ -63,6 +63,7 @@ weed iam -filer=localhost:8888 -port=8111
 | `PutUserPolicy` | Attach inline policy to user | Admin only |
 | `GetUserPolicy` | Get user's inline policy | Admin only |
 | `DeleteUserPolicy` | Remove user's inline policy | Admin only |
+| `ListUserPolicies` | List inline policy names for user | Admin only |
 | `CreatePolicy` | Create and store a managed policy | Admin only |
 | `DeletePolicy` | Delete a managed policy | Admin only |
 | `ListPolicies` | List managed policies | Admin only |