docs(*): add clean_on_exit in config

cosmtrek · cosmtrek · commit 250bbe9a44d4 · 2019-11-10T04:57:19.000+08:00
diff --git a/air.conf.example b/air.conf.example
@@ -33,3 +33,7 @@ main = "magenta"
 watcher = "cyan"
 build = "yellow"
 runner = "green"
+
+[misc]
+# Delete tmp directory on exit
+clean_on_exit = true
