Remove unsupported asciicast liquid tag

Author: ryrych

Gemfile

@@ -1,6 +1,2 @@
 source 'https://rubygems.org'
 gem 'github-pages'
-
-group :jekyll_plugins do
-  gem 'jekyll-asciinema'
-end

Gemfile.lock

@@ -66,7 +66,6 @@ GEM
       redcarpet (~> 3.1)
       safe_yaml (~> 1.0)
       toml (~> 0.1.0)
-    jekyll-asciinema (0.1.0)
     jekyll-coffeescript (1.0.1)
       coffee-script (~> 2.2)
     jekyll-feed (0.3.1)
@@ -128,7 +127,6 @@ PLATFORMS
 
 DEPENDENCIES
   github-pages
-  jekyll-asciinema
 
 BUNDLED WITH
    1.10.6

_config.yml

@@ -20,5 +20,3 @@ excerpt_separator: "<!-- more -->"
 
 # Build settings
 markdown: kramdown
-
-gems: [jekyll-asciinema]

_posts/2015-12-01-adding_a_project_to_bookmarks.md

@@ -6,7 +6,8 @@ categories: asciicast
 ---
 
 <div class='asciicast-wrapper'>
-    {% asciicast 29529 %}
+    <script type="text/javascript" src="https://asciinema.org/a/29529.js" id="asciicast-29529" async>
+    </script>
 </div>
 
 <!-- more -->

_posts/2015-12-01-finding-bookmarked-projects.md

@@ -6,7 +6,8 @@ categories: asciicast
 ---
 
 <div class='asciicast-wrapper'>
-    {% asciicast 30055 %}
+    <script type="text/javascript" src="https://asciinema.org/a/30055.js" id="asciicast-30055" async>
+    </script>
 </div>
 
 Once you [added your first project to bookmarks][1], every time you start

_posts/2015-12-01-grouping-files.md

@@ -6,7 +6,8 @@ categories: asciicast
 ---
 
 <div class='asciicast-wrapper'>
-    {% asciicast 30059 %}
+    <script type="text/javascript" src="https://asciinema.org/a/28701.js" id="asciicast-28701" async>
+    </script>
 </div>
 
 Grouping files is a secret weapon of *vim-ctrlspace* that allows you to work in