add Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License to README.md
add Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International
License to README.md

zimhy/shadowsocks_analysis,blog2i2j/shadowsocks_analysis,wesley1001/shadowsocks_analysis,sntitan/shadowsocks_analysis,blog2i2j/shadowsocks_analysis,falseen/shadowsocks_analysis,Qixingchen/shadowsocks_analysis,udo-tech-team/shadowsocks_analysis,peterzky/shadowsocks_analysis,wesley1001/shadowsocks_analysis,sntitan/shadowsocks_analysis,gitHubOffical/shadowsocks_analysis,gitHubOffical/shadowsocks_analysis,falseen/shadowsocks_analysis,stallman-cui/shadowsocks_analysis,purelandbb/shadowsocks_analysis,followmaster/shadowsocks_analysis,CasparLi/shadowsocks_analysis,peterzky/shadowsocks_analysis,Qixingchen/shadowsocks_analysis,followmaster/shadowsocks_analysis,zimhy/shadowsocks_analysis,udo-tech-team/shadowsocks_analysis,purelandbb/shadowsocks_analysis,CasparLi/shadowsocks_analysis,stallman-cui/shadowsocks_analysis