Load config from ENV

cmd/budgeteer/main.go

@@ -10,9 +10,9 @@ import (
 )
 
 func main() {
-	cfg, err := config.LoadConfig("config.json")
+	cfg, err := config.LoadConfig()
 	if err != nil {
-		panic("Could not load Config from config.json")
+		panic("Could not load Config")
 	}
 
 	bv := &bcrypt.Verifier{}