Update Readme

Author: glibas

README.md

@@ -46,6 +46,8 @@ Full plugin configuration below, optional properties can be omitted
  <mode>automated</mode>
  <!--Optional - tag expression filter for scenarios. More on tag expressions https://cucumber.io/docs/cucumber/api/#tag-expressions-->
  <tags>(@smoke or @ui) and (not @slow)</tags>
+ <!--Optional - prepend ordinal to feature name (default is true)--> 
+ <numbered>false</numbered>
  </configuration>
  <id>features</id>
  <goals>