Got funny rendering in github, trying to sort out

Used github-pages locked gemfile, but locally I get correct
rendering... push this and see if it fixes itself.

Gemfile

@@ -0,0 +1,2 @@
+source 'https://rubygems.org'
+gem 'github-pages', group: :jekyll_plugins

_config.yml

@@ -11,10 +11,13 @@ safe: true
 excerpt_separator: "\n\n"
 kramdown:
   parse_block_html: true
-  enable_coderay: true
-  coderay:
-    coderay_line_numbers: nil
-    coderay_css: class
+  syntax_highlighter: rouge
+  syntax_highlighter_opts:
+    css_class: 'highlight'
+    span:
+      line_numbers: false
+    block:
+      line_numbers: true
 
 # Themes are encouraged to use these universal variables
 # so be sure to set them if your theme uses them.

local

@@ -1,2 +1,3 @@
 #!/bin/bash -e
-jekyll serve --watch --config _config.yml,_local_config.yml "$@"
+##jekyll serve --watch --config _config.yml,_local_config.yml "$@"
+bundle exec jekyll serve --watch --config _config.yml,_local_config.yml "$@"