简单通行证哈希
如何使用它？
基本用法
[Hasher（opts）]
'use strict'
const hasher = require('simple-pass-hasher')
const fooHash = hasher({
password: 'fooPassword',
key: 'fooSecret',
algorithm: 'sha1',
encoding: 'utf8',
hmac: true
})
let digest = fooHash.digest //Return encrypted string
fooHash.compare('fooPassword', digest) //This will return true
fooHash.compare('foopassword', digest) //Thi
