-titleCaseToCamelCase

- (NSString *)titleCaseToCamelCase {
  NSString *string = [self capitalizedString];
  string = [string stringByReplacingOccurrencesOfString:@" " withString:@""];
  string = [NSString stringWithFormat:@"%@", string];
  
  return [string stringByReplacingCharactersInRange:NSMakeRange(0, 1)
                                         withString:[[string substringToIndex:1]
                                                     lowercaseString]];
}