code: function removeDuplicates(arr) {
      if (isArray(arr)) {
          return reduce(arr, function (a, b) {
              if (indexOf(a, b) === -1) {
                  return a.concat(b);
              } else {
                  return a;
              }
          }, []);
      }
  }
docs: Removes duplicates from an array
  
  @example
  
  comb.array.removeDuplicates([1,1,1]) => [1]
  comb.array.removeDuplicates([1,2,3,2]) => [1,2,3]
  
  @param {Aray} array the array of elements to remove duplicates from
  
  @static
  @memberOf comb.array