add release notes link to README
add release notes link to README

signalnine/zxcvbn,varenc/zxcvbn,hnq90/zxcvbn,signalnine/zxcvbn,fo0nikens/zxcvbn,shotishu/zxcvbn,dockbiz/zxcvbn,alextekartik/zxcvbn,fo0nikens/zxcvbn,hnq90/zxcvbn,dockbiz/zxcvbn,signalnine/zxcvbn,shotishu/zxcvbn,alextekartik/zxcvbn,fo0nikens/zxcvbn,hnq90/zxcvbn,shotishu/zxcvbn,alextekartik/zxcvbn,paulballesty/zxcvbn,dropbox/zxcvbn,varenc/zxcvbn,dockbiz/zxcvbn,varenc/zxcvbn,hn3000/zxcvbn