docs: update README to mark required and optional environment variables

README.md

@@ -8,7 +8,7 @@ This is the next-generation OneBusAway web application, built on top of [SvelteK
 npm install
 cp .env.example .env
 # edit .env with your editor of choice
-npm run dev
+npm run devPUBLIC_NAV_BAR_LINKS
 ```
 
 ## `.env` File Keys
@@ -17,32 +17,32 @@ See `.env.example` for an example of the required keys and values.
 
 ### Visuals
 
-- `PUBLIC_OBA_REGION_NAME` - string: displayed in the header.
-- `PUBLIC_OBA_LOGO_URL` - string: The URL of your transit agency's logo.
-- `PUBLIC_NAV_BAR_LINKS` - JSON string: A dictionary of the links displayed across the navigation bar.
+- `PUBLIC_OBA_REGION_NAME` - string: (required) displayed in the header.
+- `PUBLIC_OBA_LOGO_URL` - string: (required) The URL of your transit agency's logo.
+- `PUBLIC_NAV_BAR_LINKS` - JSON string: (required) A dictionary of the links displayed across the navigation bar.
 
 ### OBA Server
 
-- `PUBLIC_OBA_SERVER_URL` - string: Your OBA API server's URL.
-- `PUBLIC_OBA_REGION_CENTER_LAT` - float: The region's center latitude.
-- `PUBLIC_OBA_REGION_CENTER_LNG` - float: The region's center longitude.
-- `PRIVATE_OBA_API_KEY` - string: Your OneBusAway REST API server key.
+- `PUBLIC_OBA_SERVER_URL` - string: (required) Your OBA API server's URL.
+- `PUBLIC_OBA_REGION_CENTER_LAT` - float: (required) The region's center latitude.
+- `PUBLIC_OBA_REGION_CENTER_LNG` - float: (required) The region's center longitude.
+- `PRIVATE_OBA_API_KEY` - string: (required) Your OneBusAway REST API server key.
 - `PRIVATE_OBACO_API_BASE_URL` - string: (optional) Your OneBusAway.co server base URL, including the path prefix `/api/v1/regions/<YOUR REGION ID>`.
 - `PRIVATE_OBACO_SHOW_TEST_ALERTS` - boolean: (optional) Show test alerts on the website. Don't set this value in production.
 
 ### Maps
 
-- `PUBLIC_OBA_GOOGLE_MAPS_API_KEY` - string: Your Google API key. Leave this blank if you don't have one.
+- `PUBLIC_OBA_GOOGLE_MAPS_API_KEY` - string: (optional) Your Google API key.
 - `PUBLIC_OBA_MAP_PROVIDER` - string: Use "osm" for OpenStreetMap or "google" for Google Maps.
 
 ### Geocoding
 
-- `PRIVATE_OBA_GEOCODER_API_KEY` - string: Your Geocoder service's API key. Ensure that the Geocoder and Places API permissions are enabled. Leave this blank if you don't have one.
-- `PRIVATE_OBA_GEOCODER_PROVIDER` - string: Your Geocoder service. We currently only support the Google Places SDK (value: "google").
+- `PRIVATE_OBA_GEOCODER_API_KEY` - string: (optional) Your Geocoder service's API key. Ensure that the Geocoder and Places API permissions are enabled.
+- `PRIVATE_OBA_GEOCODER_PROVIDER` - string: (required) Your Geocoder service. We currently only support the Google Places SDK (value: "google").
 
 ### Trip Planner
 
-- `PUBLIC_OTP_SERVER_URL` - string: Your OpenTripPlanner 1.x-compatible trip planner server URL. Leave this blank if you don't have one.
+- `PUBLIC_OTP_SERVER_URL` - string: (optional) Your OpenTripPlanner 1.x-compatible trip planner server URL.
 
 ## Building