module HTTParty::ClassMethods

def base_uri(uri = nil)

end
base_uri 'twitter.com'
include HTTParty
class Foo

Will normalize uri to include http, etc.
Allows setting a base uri to be used for each request. 
def base_uri(uri = nil)
  return default_options[:base_uri] unless uri
  default_options[:base_uri] = HTTParty.normalize_base_uri(uri)
end