Add Ubuntu/Jekyll instructions

Author: ericcohen128

_config.yml

@@ -1,5 +1,5 @@
 remote_theme: pages-themes/[email protected]
-title: Test Pages
+title: Engineering Blog
 plugins:
 - jekyll-remote-theme # add this line to the plugins list if you already have one
 

index.md

@@ -1,5 +1,6 @@
 ---
 layout: default
+title: "Engineering Blog"
 ---
 
 # GitHub Blog Entries
@@ -10,6 +11,19 @@ layout: default
 
 {% endfor %}
 
-# Random test
+# How To Preview and Submit a Blog Entry
 
-Testing pages...test..@zx
+This site is hosted on [GitHub Pages](https://pages.github.com/) and uses [Jekyll](https://docs.github.com/en/pages/setting-up-a-github-pages-site-with-jekyll) to generate the site HTML from markdown.
+
+## Ubuntu/Linux
+
+First, clone the github pages repo.  Then, to make and preview edits locally, install, and start [Jekyll](https://docs.github.com/en/pages/setting-up-a-github-pages-site-with-jekyll):
+
+```
+cd $GITPAGES_DIR
+sudo apt-get install bundler jekyll rails
+sudo bundle install
+bundle exec jekyll serve
+```
+
+You should now be able to preview your site locally at `http://127.0.0.1:4000`.  Note that the Jekyll server should automatically pick up edits upon save via inode notify.