Add Versioner module
Playing with dynamic routes
Build dynamic version route output
Rename Version class to VersionInfo

This way we can avoid breakage in Gemspecs of other gems, that need the
versioner module as well, as they cannot see llt-core when the gem's
VERSION constant is accessed for the first time.
Rename main node in Versioner#to_xml

Don't use 'gem' as its name, but the more general 'service'
Fix Dynamic Routes after recent name change

Version class is called VersionInfo now
Listen to xml for dynamic version routes
Update formatting of version routes