Update docs.

Author: OlgaMaciaszek

README.adoc

@@ -316,3 +316,7 @@ Go to `File` -> `Settings` -> `Other settings` -> `Checkstyle`. There click on t
 - `checkstyle.additional.suppressions.file` - this variable corresponds to suppressions in your local project. E.g. you're working on `spring-cloud-contract`. Then point to the `project-root/src/checkstyle/checkstyle-suppressions.xml` folder. Example for `spring-cloud-contract` would be: `/home/username/spring-cloud-contract/src/checkstyle/checkstyle-suppressions.xml`.
 
 IMPORTANT: Remember to set the `Scan Scope` to `All sources` since we apply checkstyle rules for production and test sources.
+
+== License
+
+The project license file is available https://raw.githubusercontent.com/spring-cloud/spring-cloud-openfeign/2.2.x/LICENSE.txt[here].

docs/src/main/asciidoc/_configprops.adoc

@@ -1,6 +1,7 @@
 |===
 |Name | Default | Description
 
+|feign.circuitbreaker.enabled | false | If true, an OpenFeign client will be wrapped with a Spring Cloud CircuitBreaker circuit breaker.
 |feign.client.config |  | 
 |feign.client.decode-slash | true | Feign clients do not encode slash `/` characters by default. To change this behavior, set the `decodeSlash` to `false`.
 |feign.client.default-config | default |