Specify post excerpts with comment separator

_config.yml

 markdown: kramdown
 kramdown:
     syntax_highlighter: rouge
+excerpt_separator: "<!--excerpt-->"
 paginate: 10
 paginate_path: "blog/page:num"
 gems:

_posts/2012-12-03-hello-world.md

 was what I was working with at [Valti](https://www.valti.com), and I was really
 liking making websites with it. It took what made Python awesome and applied
 that to web development.
+<!--excerpt-->
 
 I started from a blank Django project and built it up from there. Django's
 Object-Relational Mapper (ORM) can be boiled down to this: python classes

_posts/2013-04-02-blog-or-not-blog.md

 World!"](/2012/12/03/hello-world) post. Sure, I've been working on projects, but I
 just haven't gotten to the point in any of those projects where I felt like I
 could blog in detail about it.
+<!--excerpt-->
 
 Then I watched this great talk that [Brian
 Jones](http://pyvideo.org/speaker/352/brian-k-jones) gave at

_posts/2013-04-09-visualizing-laundry-usage.md

 [website](http://gmu.esuds.net/) so students can check how full the machines
 are before making the trek down to the laundry rooms. The system emails each
 student when their laundry is finished as well.
+<!--excerpt-->
 
 The only problem is that their user interface is pretty atrocious. I wrote up a
 [usability analysis](https://gist.github.com/thallada/5351114) of the site for

_posts/2013-04-18-how-download-rtmp-video.md

 video file is never given to the user for them to keep. This is desirable to a
 lot of media companies because then they can force you to watch through ads to
 see their content and can charge you to download the full video.
+<!--excerpt-->
 
 However, [RTMPDump](http://rtmpdump.mplayerhq.hu/), an open-source tool
 designed to intercept RTMP streams, can download the full video. 

_posts/2013-04-26-hackers.md

 and [Humbug](https://humbughq.com/) in Cambridge, Massachusetts. Seeing as it
 encapsulated what I've learned culturally since then, I decided to post it here
 as well.*
+<!--excerpt-->
 
 Hackers -- not your malicious meddling Hollywood-style speed-typists -- but the
 type who sees a toaster and turns it into a computer capable of etching emails

_posts/2013-05-19-gmu-bookstore-homepage-concept.md

 usability principles we had learned over the semester. I ended up working on it
 when I wanted to procrastinate on assignments in my other classes, so I put
 quite a bit of effort into it.
+<!--excerpt-->
 
 See it here: [swe205.hallada.net](http://swe205.hallada.net)
 <div style="text-align: center">

_posts/2013-06-04-w3m-reddit.md

 way to view reddit through the command-line.  [w3m](http://w3m.sourceforge.net/)
 could render reddit okay, but I couldn't view my personal front-page because
 that required me to login to my profile.
+<!--excerpt-->
 
 The solution was [cortex](http://cortex.glacicle.org/), a CLI app for viewing
 reddit.

_posts/2013-07-10-quick-command-line-search-search-pane.md

 powerful than being able to whip up a small python or bash script that interacts
 with a couple of other programs to achieve something instantly that optimizes my
 work flow.
+<!--excerpt-->
 
 I use the [Awesome](http://awesome.naquadah.org/) window manager, which works
 great for tiling up terminal windows right up next to browser windows. However,

_posts/2013-08-24-on-chromebooks.md

 browser?  Why would you spend [$1299 or $1449 for a
 computer](https://www.google.com/intl/en/chrome/devices/chromebooks.html#pixel)
 that can only run a browser?
+<!--excerpt-->
 
 While I know a lot of people who buy expensive MacBooks only to just use a web
 browser and iTunes, I’m a bit more of a power user and I need things like

_posts/2013-10-03-publishing-draft-docs-to-my-blog.md

 send a draft to other people and accept or reject any changes they suggest. It
 also has a minamilistic iA Writer type interface, which focuses on the actual
 writing and nothing more.
+<!--excerpt-->
 
 One of my most favorite features that I have just discovered, though, is that
 it allows publishing any Draft document to any arbitrary

_posts/2014-07-30-new-website.md

 annoyed me about my last website was that I was hosting what essentially was a
 static website on a web framework meant for dynamic websites. It was time for a
 update.
+<!--excerpt-->
 
 I decided to go with [Jekyll](http://jekyllrb.com/) which had everything I
 wanted:

_posts/2015-06-03-midnight-desktop.md

 protect my eyes from the blinding light of my monitors I've tooled my desktop
 environment over the course of a few months to be as dark as possible. It has
 gotten complex enough that I thought it would be worth sharing now.
+<!--excerpt-->
 
 ### dotfiles
 

_posts/2016-01-06-neural-style.md

 the last month. I think I've discovered a few exciting applications of the
 technique that I haven't seen anyone else do yet. The true power of this
 algorithm really shines when you can see concrete examples.
+<!--excerpt-->
 
 Skip to the **Applications** part of this post to see the outputs from my
 experimentation if you are already familiar with DeepDream, Deep Style, and all

_posts/2017-06-20-how-to-install-tensorflow-on-ubuntu-16-04.md

 for installation instructions, especially in regards to getting GPU support.
 I'm going to write down my notes from wrangling with the installation here for
 future reference and hopefully this helps someone else too.
+<!--excerpt-->
 
 This will invariably go out-of-date at some point, so be mindful of the publish
 date of this post. Make sure to cross-reference other documentation that has

_posts/2017-07-11-generating-random-poems-with-python.md

 
 You might not realize it, but you probably use an app everyday that can generate
 random text that sounds like you: your phone keyboard.
+<!--excerpt-->
 
 ![Suggested next words UI feature on the iOS
 keyboard](/img/blog/phone_keyboard.jpg)

_posts/2017-08-07-proximity-structures.md

 accelerated) primitive
 shapes](http://www.goodboydigital.com/pixi-webgl-primitives/) (lines and
 circles).
+<!--excerpt-->
 
 **Play with it here**: [http://proximity.hallada.net](http://proximity.hallada.net)
 

_posts/2017-08-30-making-mailing-list-jekyll-blog-using-sendy.md

 that they offer. I'm really happy to see an email sign up on blogs I like,
 because it means I'll know when they post new content in the future. I check my
 email regularly unlike my RSS feeds.
+<!--excerpt-->
 
 Even though I'm sure my blog is still too uninteresting and unheard of to get
 many signups, I still wanted to know what it took to make a blog mailing list.

_posts/2017-11-15-isso-comments.md

 enjoyed working on it at the time, it was a lot of work, especially to fight the
 spam. Now that my blog is hosted statically on Github's servers, I have no way
 to host something dynamic like comments.
+<!--excerpt-->
 
 [Disqus](http://disqus.com/) seems to be the popular solution to this problem
 for other people that host static blogs. The way it works is that you serve a