Add comments to describe functions and types

src/background/ticker.go

@@ -11,10 +11,12 @@ import (
 
 const frequency = 3 * time.Second // Figure out a sensible frequency!
 
+// Starts a background ticker to run background tasks.  Uses the frequency configured in the background/ticker.go file
 func InitTicker(cfg *helpers.Configuration, stop <-chan struct{}) {
 	go runTicker(cfg, stop)
 }
 
+// Runs the ticker and handles tick events
 func runTicker(cfg *helpers.Configuration, stop <-chan struct{}) {
 	log.Msg.Sugar().Infof("Starting background ticker, runs every %s", frequency)
 	ticker := time.NewTicker(frequency)