Added isso as a Disqus alternative to the docs

Hi,

I'm using isso with my hugo blog which works just fine.
I think this should be added to the docs :)

Thanks!

diff --git a/docs/content/extras/comments.md b/docs/content/extras/comments.md
index ade38aa442359711e7993229430955cb9605cf86..713f6fb5fb5d532d3370dc5b728d50d52afff67a 100644 (file)
--- a/docs/content/extras/comments.md
+++ b/docs/content/extras/comments.md
@@ -84,6 +84,7 @@ A few alternatives exist to [Disqus](https://disqus.com/):
 * [Livefyre](http://livefyre.com/)
 * [Muut](http://muut.com/)
 * [多说](http://duoshuo.com/) ([Duoshuo](http://duoshuo.com/), popular in China)
+* [isso](http://posativ.org/isso/) (Self-hosted, Python)
 * [Kaiju](https://github.com/spf13/kaiju)