Applyaf

- Remove Py2.6/2.7 from Travis-CI.
- Remove if main, since only run as library.

Added

- Ability to remove antenna factors and cable losses

Changed

- Migrated Travis-CI from legacy to container-based
infrastructure
- Added coverage to requirements.txt and updated `inv test` task to
run coverage as well.

Changed

- Updated pip requirements including numpy from 1.8.1 to 1.9.2

Changed

- Moved AUTHORS.txt to AUTHORS.md
- Moved CHANGES.md to CHANGELOG.md
- Switched badges to shields.io
- Updated README.md

Added

- Create release script [2][]

[1]: https://github.com/questrail/applyaf/issues/1
[2]: https://github.com/questrail/applyaf/issues/2
[applyaf]: https://github.com/questrail/applyaf