use `-p` to run actual `modernmillers.com`

coz in http://modernmillers.com/sitemap.xml we have

<url>
  <loc>http://127.0.0.1:8000/my/posts/sewing/leaves</loc>
  <lastmod>2014-11-23</lastmod>
  <chandefreq>never</chandefreq>
  <priority>1.0</priority>
</url>

[iamchrismiller]

Looks like I missed that on my last run. Thank you. I will re-run tonight after work.