Add Travis CI notifications to Telegram chat

[SergioLuis]

Developer: @jhvargas3112 Reviewer: @SergioLuis

---

Easy-peasy: just add the following lines at the end of the .travis.yml file located at the root of the repository:

notifications:
  webhooks: https://fathomless-fjord-24024.herokuapp.com/notify

Some tips:

• Create a new branch (task-010) starting from the head of dev.
• Make the necessary change and commit it.
• Push the branch to GitHub, and create a pull request to dev from GitHub.

If everything goes OK, we should receive a notification in out Telegram channel a few minutes after the pull request is created.

[SergioLuis]

11 Solves this.