Revert "Delete not used file."

This reverts commit a6314f338ad5962d83824d3edd980520842c6b25.

git-svn-id: https://svn.apache.org/repos/asf/creadur/rat/branches/gsoc@1549450 13f79535-47bb-0310-9956-ffa450edef68
Add Test

git-svn-id: https://svn.apache.org/repos/asf/creadur/rat/branches/gsoc@1549451 13f79535-47bb-0310-9956-ffa450edef68