detect.source           Detect the source of a text.
get.key                 Pull the API key from 'getOption('google.key')'
                        or the 'GOOGLE_KEY' environment variable.
google.url              Generate an API URL.
languages               List the valid language mappings; optionally,
                        from a given source or to a given target.
set.key                 Set the API key in 'options'.
translate               Translate the given text from a source to a
                        target language.
translate-package       translate
