Add note for gh-pages when initial branch is not named master (#117)

README.md

@@ -66,6 +66,14 @@ We use [Trunk](https://trunkrs.dev/) to build for web target.
 > To enable Github Pages, you need to go to Repository -> Settings -> Pages -> Source -> set to `gh-pages` branch and `/` (root).
 >
 > If `gh-pages` is not available in `Source`, just create and push a branch called `gh-pages` and it should be available.
+>
+> If you renamed the `master` branch to something else (say you re-initialized the repository with `main` as the initial branch), be sure to edit the github workflows `.github/workflows/pages.yml` file to reflect the change
+> ```yml
+> on:
+>   push:
+>     branches:
+>       - <branch name>
+> ```
 
 You can test the template app at <https://emilk.github.io/eframe_template/>.