Fix some errors in the phpdocs.
Merge pull request #27 from nubs/phpdoc-errors

Fix some errors in the phpdocs.
Setup for scrutinizer ci.
Add poser.pugx.org composer badges.
Merge pull request #26 from nubs/scrutinizer

Add support for Scrutinizer CI
Add `url` alias to the Filterer.
Document the URL filter in the README.
Fix some typos with missing ::filter in the README.
Merge pull request #28 from nubs/add-url-to-filterer

Add url alias to filterer and document in README.
Add contribution guidelines.
Merge pull request #29 from nubs/contribution-guidelines

Add contribution guidelines.
Fix casing of "Pull Requests".
Merge pull request #30 from nubs/contribution-guidelines

Fix casing of "Pull Requests".
Use an isset instead of array_key_exists
Use coversDefaultClass in any tests that are not already.
Add default support.
Merge pull request #32 from gaillard/master

Default support and coversDefaultClass
Add registerAlias