code: function commutate(key, list) {
      _.each(list, function (v, k, l) {
          if (k === key) {
              l[key] = true
          }
          if (v === true && k !== key) {
              l[k] = false
          }
      })
  }
docs: this function will iterate over each list elements
  setting the one on key to true an all other on false
  @param key String, the key to set as true
  @param list Object, the object to search for the key to set to true
  @return void