Merge branch 'release/0.1' into develop
CountryDetector -> Detector
OneOfCountryDetector -> OneOfDetector
StartWithCountryDetector -> StartWithDetector
Merge branch 'feature/rename_detectors' into develop
Don't polluate Country

Move all methods into extensions
Provide extension support
Updated comments and documentation
Make Country extension default
GemFile locks

Locking dependencies a little better to versions
Version bump to 1.0.0
Merge branch 'release/1.0'