code: function normalize(p){
    var notation = {
        'a': "āáǎà"
      , 'e': "ēéěè"
      , 'i': "īíǐì"
      , 'o': "ōóǒò"
      , 'u': "ūúǔù"
    };
    Object.keys(notation).forEach(function(letter){
      p = p.replace(new RegExp('[' + notation[ letter ] + ']' ), letter);
    });
    return p;
  }
docs: [normalize description]
  @param  {[type]} p [description]
  @return {[type]}   [description]