Renamed travis.yml file to travis.yml.sample

 - updated Pull Request teample. Travis is not required

Author: Oleksii Korshenko

.github/PULL_REQUEST_TEMPLATE.md

@@ -35,4 +35,4 @@
  - [ ] Pull request has a meaningful description of its purpose
  - [ ] All commits are accompanied by meaningful commit messages
  - [ ] All new or changed code is covered with unit/integration tests (if applicable)
- - [ ] All automated tests passed successfully (all builds on Travis CI are green)
+ - [ ] All automated tests passed successfully (all builds are green)