Merge pull request #4 from pentops/update-readme

put some words in the readme

Author: dan9186

README.md

@@ -1,2 +1,7 @@
 Trigger
 =======
+
+A generic service for creating events within the system based on a cron schedule.
+This service is not intended to have any sort of additionally capable business
+logic related to the cron schedule. Any additional business logic should be
+implemented in the service that is triggered by the event.