Make Keystone API's Region available

Just in case. This makes it possible to refer to it
without hardcoding the Region Name.
Simply replaced havana with icehouse
Merge pull request #211 from tboerger/feature/havana-to-icehouse

Simply replaced havana with icehouse
Merge pull request #209 from dirkmueller/release/stoney/master

Make Keystone API's Region available
Added documentation and modified readme
Added gitignore file
Moved i18n file
Updated copyright header
Rewritten hashes to 1.9 syntax
Added magic utf8 token to ruby files
Restructured controller initializer
Added documentation base file and fixed documentation format
Added missing magic utf8 tokens