update readme

README.md

@@ -2,24 +2,26 @@ This lab website based on Aharoni lab site https://github.com/Aharoni-Lab/Aharon
 
 # Instructions for updating / maintaining website
 
-- After making changes, commit and push changes to github, then wait for a few minutes for changes to propagate to live site. If you want to generate a local version before pushing to github, run `bundle install` before pushing (I think.)
+- After making changes, commit and push changes to github, then wait for a few minutes for changes to propagate to live site. 
+- If you want to generate a local version before pushing to github, [install jekyll via homebrew](https://jekyllrb.com/docs/installation/macos/), then cahnge directory into this git repo, then run `bundle install`, then run `bundle exec jekyll serve`  and navigate to http://localhost:4000 to see the local preview.
 
 ## Home
 
 - To update the home page, edit the [/index.md](https://github.com/bergmanlab/bergmanlab.github.io/blob/main/index.md) file
-- To add a banner image, place it as /assets/images/banner.png
+- To add a banner image, place it as `/assets/images/banner.png`
 - To add a page to the navigation bar, add it to "main" in [/_data/navigation.yml](https://github.com/bergmanlab/bergmanlab.github.io/blob/main/_data/navigation.yml)
 
 ## Lab Personnel
 - For people, keep their info updated in the [/_data/people.yml](https://github.com/bergmanlab/bergmanlab.github.io/blob/main/_data/people.yml) file
-- If including image of the person, place the image in the /People/ folder
-- Then to add them to the "People" page, add `{% include person.html name='INSERT_NAME_HERE' %}` to the appropriate section of [/People/index.md](https://github.com/bergmanlab/bergmanlab.github.io/blob/main/People/index.md) file
+- If including an image of the person, place the image in the `/People` folder
+- To add a person to the "People" page, add `{% include person.html name='INSERT_NAME_HERE' %}` to the appropriate section of the [/People/index.md](https://github.com/bergmanlab/bergmanlab.github.io/blob/main/People/index.md) file
 
 ## Research, Publications, and Join
 
 - These pages can be edited at their respective /FOLDER/index.md files.
 
 ## Blog
 
-- To create a blog post, add it to the /_posts/ folder as a md file with the name YYYY-MM-DD-POSTNAME.md
+- To create a blog post, add it to the /_posts/ folder as a md file with the name YYYY-MM-DD-POSTNAME.md.
+- make sure to keep a blank `tagline: " "` in the header to prevent the body of the post from showing up in the header.