website: document the precedence table

website/source/api/connect/intentions.html.md

@@ -128,6 +128,7 @@ $ curl \
   "DefaultAddr": "",
   "DefaultPort": 0,
   "Meta": {},
+  "Precedence": 9,
   "CreatedAt": "2018-05-21T16:41:27.977155457Z",
   "UpdatedAt": "2018-05-21T16:41:27.977157724Z",
   "CreateIndex": 11,
@@ -175,6 +176,7 @@ $ curl \
     "DefaultAddr": "",
     "DefaultPort": 0,
     "Meta": {},
+    "Precedence": 9,
     "CreatedAt": "2018-05-21T16:41:27.977155457Z",
     "UpdatedAt": "2018-05-21T16:41:27.977157724Z",
     "CreateIndex": 11,

website/source/docs/connect/intentions.html.md

@@ -81,10 +81,22 @@ Created At:         Friday, 25-May-18 02:07:51 CEST
 ## Precedence and Match Order
 
 Intentions are matched in an implicit order based on specificity, preferring
-deny over allow. The full precedence table is shown below and is evaluated
+deny over allow. Specificity is determined by whether a value is an exact
-top to bottom.
+specified value or is the wildcard value `*`.
+The full precedence table is shown below and is evaluated
+top to bottom, with larger numbers being evaluated first.
 
-TODO
+| Source Name | Destination Name | Precedence |
+| ----------- | ---------------- | ---------- |
+| Exact       | Exact            | 9          |
+| `*`         | Exact            | 8          |
+| Exact       | `*`              | 6          |
+| `*`         | `*`              | 5          |
+
+The precedence value can be read from the [API](/api/connect/intentions.html)
+after an intention is created.
+Precedence cannot be manually overridden today. This is a feature that will
+be added in a later version of Consul.
 
 ## Intention Management Permissions