code: function(all) {
        var lastResponded;
        return this.toLowerCase().replace(all ? /[\s\S]/g : /^\S/, function(lower) {
          var upper = lower.toUpperCase(), result;
          result = lastResponded ? lower : upper;
          lastResponded = upper !== lower;
          return result;
        });
      }
docs: *
  @method capitalize([all] = false)
  @returns String
  @short Capitalizes the first character in the string.
  @extra If [all] is true, all words in the string will be capitalized.
  @example
  
  'hello'.capitalize()           -> 'Hello'
  'hello kitty'.capitalize()     -> 'Hello kitty'
  'hello kitty'.capitalize(true) -> 'Hello Kitty'
  
  
  *