Added more explicit instructions for BrowserSync.

http vs no http more consistent.

README.md

@@ -83,8 +83,27 @@ You now have all the necessary dependencies to run the build process.
 * `gulp watch` — Compile assets when file changes are made
 * `gulp --production` — Compile assets for production (no source maps).
 
+### Using BrowserSync
+
 To use BrowserSync during `gulp watch` you need update `devUrl` at the bottom of `assets/manifest.json` to reflect your local development hostname.
 
+For example, if your local development URL is `http://project-name.dev` you would update the file to read:
+```json
+...
+  "config": {
+    "devUrl": "http://project-name.dev"
+  }
+...
+```
+If your local develoment URL looks like `http://localhost:8888/project-name/` you would update the file to read:
+```json
+...
+  "config": {
+    "devUrl": "http://localhost:8888/project-name/"
+  }
+...
+```
+
 ## Documentation
 
 Sage documentation is available at [https://roots.io/sage/docs/](https://roots.io/sage/docs/).