New line behavior

[ryantate-amp]

I'm seeing a single new line in a paragraph producing a <br> in the final markdown. I'm pretty sure GFM ignores the first new line character and you need a second one before it produces a line break.

Example to reproduce:

➜  /tmp for w in this is a paragraph; do echo $w >> README.md; done
➜  /tmp go-grip README.md &
[1] 81428
➜  /tmp 🚀 Starting server: http://localhost:6419/README.md

➜  /tmp curl -s localhost:6419/README.md | htmlq .container-inner
<div class="container-inner">
        <p>this<br>
is<br>
a<br>
paragraph</p>

      </div>