hpagent option (#131)

* hpagent option

* updated docs, readme

* Update sitemapper.js

* updating package-lock.json

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Co-authored-by: Mohammad <[email protected]>
Co-authored-by: Sean Thomas Burke <[email protected]>

Author: 3 people

Diff for: README.md

@@ -78,6 +78,7 @@ You can add options on the initial Sitemapper object when instantiating it.
 + `rejectUnauthorized`: (Boolean) - If true, it will throw on invalid certificates, such as expired or self-signed ones. Default: True
 + `lastmod`: (Number) - Timestamp of the minimum lastmod value allowed for returned urls
 + `field` : (Object) - An object of fields to be returned from the sitemap. For Example: `{ loc: true, lastmod: true, changefreq: true, priority: true }`. Leaving a field out has the same effect as `field: false`. If not specified sitemapper defaults to returning the 'classic' array of urls.
++ `proxyAgent`: (HttpProxyAgent|HttpsProxyAgent) - instance of npm "hpagent" HttpProxyAgent or HttpsProxyAgent to be passed to npm "got"
 
 ```javascript