chore: update README.md

README.md

@@ -1,2 +1,8 @@
 # Source
 This branch contains source files for the files in the [main branch](https://github.com/parklab/website/tree/main).
+
+# Local Deployment
+To run locally, from the project's root directory run ```bundle exec jekyll serve```.
+
+## Development
+When developing, use the ```--livereload``` flag to update the local deployment when changes are made to the source files: ```bundle exec jekyll serve --livereload```