cf自动优选&dns解析自动更新

	new file:   README.md

	new file:   cf_dns_updater.py
	new file:   config/cmd.txt
	new file:   config/config.json
	new file:   config/domains.txt
	new file:   config/fixed_ips.txt
	new file:   get_record_id.py

Add initial project files