Setup welcome page & localization support

Few lines of ruby code, mostly env setup.
So there's nothing wrong with your implementation. :) I am ok with it.

However, this is more about SEO than anything else.

http://stackoverflow.com/questions/1828317/internationalization-and-search-engine-optimization
http://webmasters.stackexchange.com/questions/403/how-should-i-structure-my-urls-for-both-seo-and-localization