opensky/SitemapBundle — pull request #5 by bmeynell (2014-04-24 16:28:41+00:00)
Title: support for additional document properties

Currently, supported document properties are hard coded. Since the hard coded values are probably needed for everyone they have been kept intact but this PR allows for additional document properties via a configuration:

```yml
parameters:
opensky.sitemap.properties:
- anotherProperty
```