module FFaker::IdentificationMX

def curp

Clave Única de Registro de Población
http://es.wikipedia.org/wiki/Clave_%C3%9Anica_de_Registro_de_Poblaci%C3%B3n 
def curp
  all_letters = CONSONANTS + VOWELS
  hm = %w[H M]
  [
    fetch_sample(CONSONANTS), fetch_sample(VOWELS),
    fetch_sample(all_letters, count: 2).join, date, fetch_sample(hm),
    fetch_sample(ESTADOS_CURP), fetch_sample(CONSONANTS, count: 3).join,
    fetch_sample(HOMOCLAVE), rand(0..9)
  ].join
end