Update documentation

README.md

@@ -28,6 +28,8 @@ resources:
 * `concourse_url`: When set, this url will be used to override `ATC_EXTERNAL_URL` during commit status updates. No set default.  
 * `pipeline_name`(string): When set, this url will be used to override `BUILD_PIPELINE_NAME` during commit status updates.  
 * `labels`(string[]): Filter merge requests by label`[]`
+* `paths` (string[]): Include merge request if one of the modified file matches a path pattern (glob). Default: include all. 
+* `ignore_paths` (string[]): Exclude merge request if one of the modified files matches a path pattern (glob). Default: exclude none. 
 * `target_branch`(string): Filter merge requests by target_branch. Default is empty string.
 * `source_branch`(string): Filter merge requests by source_branch. Default is empty string.
 * `sort` (string): Merge requests sorting order, either `asc` (default) or `desc` to reverse.