Prevent secrets being pushed into repository

Merged Felipe Artur requested to merge issue_385_2 into master

implements #385 (closed)

Scan file names on each commit to prevent secrets being pushed into repository

https://gitlab.com/gitlab-org/gitlab-ee/uploads/455b598caf475d6c261f271205fe2150/Screen_Shot_2016-09-08_at_20.10.02.png