Update README.md

Author: TeresiaOlsson

README.md

@@ -12,3 +12,9 @@ Documentation for configurating the them is available at [https://mmistakes.gith
 2. Clone the repository
 3. Install the gems with``bundle install``
 4. Build the page with ``bundle exec jekyll serve``. In the terminal you should get a link to view the page.
+
+### Add content
+
+You can add content locally or in the web interface. The changes are deployed when pushing to the main branch. 
+
+You might need to clear your browser history to be able to see the changes.