Issue #120
 - Add version property to the ConfigurationPropertyHolder
Issue #120
 - Add Version options to command line switch
Issue #120 (Pass version via command line argument)
 - Add CommandLineVersionResolver.cs which extracts version directly from a string.
 - Update VersionResolverBuilder.cs to include the new resolver. Logic now groups the file based resolvers together and skips them if the command line resolver is valid.
 - Added Version property to the configuration objects.
 - Fix small typo / spelling error (already submitted in Pull Request #134