loading that giant YAML file and boot time

This is a super useful gem, thanks. 

On my system, `require 'language_list'` takes about 1.8 seconds. Presumably to load that giant YAML file into a hash, and then to go through it and load it into the subsidiary hashes. I haven't profiled to see which part contributes how much to the problem. 

Should the docs warn people about this increase to app startup time? 

Can anyone think of anything clever that could or should be done to ameliorate it?