updating jekyll

fixes #12

Gemfile

@@ -1,7 +1,8 @@
 source "https://rubygems.org"
 
-gem "jekyll", "~> 3.0"
+gem "jekyll", "~> 3.9"
 gem "jekyll-sitemap"
 gem "jekyll-seo-tag"
 gem "jekyll-gist"
 gem "octopress"
+gem "kramdown-parser-gfm"

Gemfile.lock

@@ -1,29 +1,29 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    addressable (2.5.2)
+    addressable (2.7.0)
-      public_suffix (>= 2.0.2, < 4.0)
+      public_suffix (>= 2.0.2, < 5.0)
     colorator (1.1.0)
-    concurrent-ruby (1.1.4)
+    concurrent-ruby (1.1.7)
-    em-websocket (0.5.1)
+    em-websocket (0.5.2)
       eventmachine (>= 0.12.9)
       http_parser.rb (~> 0.6.0)
     eventmachine (1.2.7)
-    faraday (0.15.2)
+    faraday (1.0.1)
       multipart-post (>= 1.2, < 3)
-    ffi (1.10.0)
+    ffi (1.13.1)
     forwardable-extended (2.6.0)
     http_parser.rb (0.6.0)
     i18n (0.9.5)
       concurrent-ruby (~> 1.0)
-    jekyll (3.8.5)
+    jekyll (3.9.0)
       addressable (~> 2.4)
       colorator (~> 1.0)
       em-websocket (~> 0.5)
       i18n (~> 0.7)
       jekyll-sass-converter (~> 1.0)
       jekyll-watch (~> 2.0)
-      kramdown (~> 1.14)
+      kramdown (>= 1.17, < 3)
       liquid (~> 4.0)
       mercenary (~> 0.3.3)
       pathutil (~> 0.9)
@@ -33,21 +33,24 @@ GEM
       octokit (~> 4.2)
     jekyll-sass-converter (1.5.2)
       sass (~> 3.4)
-    jekyll-seo-tag (2.5.0)
+    jekyll-seo-tag (2.6.1)
-      jekyll (~> 3.3)
+      jekyll (>= 3.3, < 5.0)
-    jekyll-sitemap (1.2.0)
+    jekyll-sitemap (1.4.0)
-      jekyll (~> 3.3)
+      jekyll (>= 3.7, < 5.0)
-    jekyll-watch (2.1.2)
+    jekyll-watch (2.2.1)
       listen (~> 3.0)
-    kramdown (1.17.0)
+    kramdown (2.3.0)
-    liquid (4.0.1)
+      rexml
-    listen (3.1.5)
+    kramdown-parser-gfm (1.1.0)
-      rb-fsevent (~> 0.9, >= 0.9.4)
+      kramdown (~> 2.0)
-      rb-inotify (~> 0.9, >= 0.9.7)
+    liquid (4.0.3)
-      ruby_dep (~> 1.2)
+    listen (3.2.1)
+      rb-fsevent (~> 0.10, >= 0.10.3)
+      rb-inotify (~> 0.9, >= 0.9.10)
     mercenary (0.3.6)
-    multipart-post (2.0.0)
+    multipart-post (2.1.1)
-    octokit (4.12.0)
+    octokit (4.18.0)
+      faraday (>= 0.9)
       sawyer (~> 0.8.0, >= 0.5.3)
     octopress (3.0.11)
       jekyll (>= 2.0)
@@ -65,32 +68,33 @@ GEM
       jekyll (>= 2.0)
     pathutil (0.16.2)
       forwardable-extended (~> 2.6)
-    public_suffix (3.0.3)
+    public_suffix (4.0.6)
-    rb-fsevent (0.10.3)
+    rb-fsevent (0.10.4)
-    rb-inotify (0.10.0)
+    rb-inotify (0.10.1)
       ffi (~> 1.0)
-    redcarpet (3.4.0)
+    redcarpet (3.5.0)
-    rouge (3.3.0)
+    rexml (3.2.4)
-    ruby_dep (1.5.0)
+    rouge (3.24.0)
-    safe_yaml (1.0.4)
+    safe_yaml (1.0.5)
-    sass (3.7.3)
+    sass (3.7.4)
       sass-listen (~> 4.0.0)
     sass-listen (4.0.0)
       rb-fsevent (~> 0.9, >= 0.9.4)
       rb-inotify (~> 0.9, >= 0.9.7)
-    sawyer (0.8.1)
+    sawyer (0.8.2)
-      addressable (>= 2.3.5, < 2.6)
+      addressable (>= 2.3.5)
-      faraday (~> 0.8, < 1.0)
+      faraday (> 0.8, < 2.0)
     titlecase (0.1.1)
 
 PLATFORMS
   ruby
 
 DEPENDENCIES
-  jekyll (~> 3.0)
+  jekyll (~> 3.9)
   jekyll-gist
   jekyll-seo-tag
   jekyll-sitemap
+  kramdown-parser-gfm
   octopress
 
 BUNDLED WITH