host option for dumper with fallback to dumper_base_url
dumper doc update
removed shortcut for host option
use host option for sitemap absolute urls
fix related url in main sitemap.xml #16
start releasing 1.3
fix filemask in dumper to consistent with PrestaSitemapBundle_section route #23
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
Use EventDispatcherInterface instead of ContainerAwareEventDispatcher
Replace Boolean parameter with array of parameters
Extract AbstractGenerator class
Transfert lead to @aflaus [ci skip]