Automatically create target directory when dumping sitemap (closes #20)
Remove temporary file after dumping urlset (closes #24)
update contributors
use request scope for dump urls
use base-url option instead of host
dump command functional tests
fixed base-url description
Merge branch 'fix-20' of git://github.com/Koc/PrestaSitemapBundle into Koc-fix-20

Conflicts:
	Command/DumpSitemapsCommand.php
Add support of gzip in dumper (closes #22)
Decompress file for platform-independent tests
Documention gzip