diff --git a/README.md b/README.md
index 193c30b..226d4bc 100755
--- a/README.md
+++ b/README.md
@@ -43,6 +43,31 @@ Enable the rules that you would like to use:
 - `terminating-properties` - Prevent calling `to.be.ok` and other assertion properties as functions
 
 
+### Additional configuration
+
+#### terminating-properties rule
+
+A number of extenstions to chai add additional terminating properties.  For example [chai-http](https://github.com/chaijs/chai-http) adds:
+
+ - headers
+ - html
+ - ip
+ - json
+ - redirect
+ - text
+
+The terminating-properties rule can be configured to ensure these (or other) additional properties are not used as functions:
+
+```json
+{
+  "rules": {
+    "chai-expect/terminating-properties": ["error", {
+      "properties": ["headers", "html", "ip", "json", "redirect", "test"]
+    }]
+  }
+}
+```
+
 ## License
 
 eslint-plugin-chai-expect is licensed under the [MIT License](http://www.opensource.org/licenses/mit-license.php).