Renfe-cli

* Python lib-like refactor

* Users can define custom origin and destination stations defaults. Closes [2](https://github.com/gerardcl/renfe-cli/issues/2)

* Enhanced code coverage

* Codecoverage: Travis CI with SonarCloud integration

* Travis CI automated deployment to PyPI through Linux job when new tag released. Closes [6](https://github.com/gerardcl/renfe-cli/issues/6)

* Reverting Travis CI deploy stage from previous release and opened issue [5](https://github.com/gerardcl/renfe-cli/issues/5)

* Travis CI deploying releases through git tags to PyPI

* Enhanced logging and debug options
* Error handling
* Pre-checks
* PyPi with RST formatted readme [3](https://github.com/gerardcl/renfe-cli/issues/3)