Statick-tooling

Changed

- Filtering out yaml files from the dockerfile sources since all three dockerfile linters
use yaml files as their configuration files. (12)

Fixed

- Changing dockerfilelint rc file to an empty file since dockerfilelint doesn't handle an empty rules list. (11)
- Adding issues to the statick output if one of the dockerfile linter plugins throws an error while parsing
the output from its tool. (11)
- Adding dockerfile_lint to npm dependency file. (gregtkogut, 10)

Fixed

- Correcting usage of dockerfilelint config file
(the tool expects a directory path, not the full file path). (3)

Added

- Initial release (Alexander Xydes, axydes)
- Dockerfile discovery plugin.
- [dockerfilelint](https://github.com/replicatedhq/dockerfilelint) tool plugin.
- [dockerfile-lint](https://github.com/projectatomic/dockerfile_lint) tool plugin. (#1)