Updated config vars for API.

docs/developer-guide.md

@@ -44,22 +44,21 @@ using a fancy calendar interface.
 
 These data-sources need to be configurated in the "engine.ini" configuration file:
 
-    # The URL to get the Calendar via PV/Steering
-    calendarurl="http://localhost:8000/api/v1/playout"
+    # The URL to get the Calendar via Steering
+    api_calendar_url="http://localhost:8000/api/v1/playout"
 
-    # The URL to get show details via PV/Steering
+    # The URL to get show details via Steering
     api_show_url="http://localhost:8000/api/v1/shows/${ID}/"
 
-The AURA Project "**Tank**" on the other hand delivers information on the tracks, playlists
+The AURA Project "**Tank**" on the other hand delivers information on the tracks, related playlists
 to be played and its meta-data:
 
     # The URL to get playlist details via Tank
-    importerurl="http://localhost:8040/api/v1/shows/${SLUG}/playlists"
+    api_playlist_url="http://localhost:8040/api/v1/shows/${SLUG}/playlists"
 
 
 More information you can find here: <https://gitlab.servus.at/autoradio/meta/blob/master/api-definition.md>
 
-
 ### Provided API Endpoints
 
 **Soundserverstate:** Returns true and false values of the internal In- and Outputs