Ruby API client for the Gender API (https://gender-api.com)

gender_api.gemspec

Gem::Specification.new do |s|
  s.name        = "gender_api"
  s.version     = "0.0.1"
  s.date        = "2016-03-05"
  s.summary     = "API client for the Gender API"
  s.description = "API client for the gender detection service Gender API: https://gender-api.com/en/api-docs"
  s.authors     = ["Skye Shaw"]
  s.email       = "skye.shaw@gmail.com"
  s.files       = Dir["*.rb"]
  s.require_paths = ["."]
  s.homepage    = "https://gist.github.com/sshaw/07f80e166dbe6d4b64b8"
  s.license     = "MIT"
end

gender_api.rb

require "json"
require "uri"
require "net/http"

# API client for the Gender API (https://gender-api.com/en/api-docs)
# https://gist.github.com/sshaw/07f80e166dbe6d4b64b8
#
# By: Skye Shaw (https://github.com/sshaw)
# Date: 2016-03-05

class GenderAPI
  ENDPOINT = "https://gender-api.com/get".freeze

  class Error < StandardError
    attr :errno

    def initialize(message, errno = nil)
      @errno = errno
      super(message)
    end
  end

  def initialize(key = nil)
    @key = key
  end

  def name(name, options = {})
    name = Array(name)
    raise ArgumentError, "name required" unless name.any?

    request(options.merge(:name => name.join(";")))
  end

  def split(name, options = {})
    raise ArgumentError, "name required" unless name

    request(options.merge(:split => name))
  end

  def email(email, options = {})
    raise ArgumentError, "email required" unless email

    request(options.merge(:email => email))
  end

  private

  def request(params)
    data = parse_response(send_request(params))
    raise Error.new(data["errmsg"], data["errno"]) if data["errno"]
    data
  end

  def send_request(params)
    Net::HTTP.get(url(params))
  rescue => e
    raise Error, "request failed: #{e}"
  end

  def parse_response(json)
    JSON.parse(json)
  rescue JSON::ParserError => e
    raise Error, "failed to parse JSON response: #{e}"
  end

  def url(params)
    params[:key] = @key if @key

    qs = URI.encode_www_form(params)
    qs.gsub!("+", "%20")

    URI(sprintf("%s?%s", ENDPOINT, qs))
  end
end

I want to change my gender what do I need to do to make it happen