Update README

Author: ehmicky

README.md

@@ -61,12 +61,12 @@ environment variable to prevent warnings being logged twice.
 
 The `exitOn` option specifies which event should trigger `process.exit(1)`:
 
-- the default value is `['uncaughtException']`. Exiting is the default
+- the default value is `['uncaughtException']`. This is the default
   behavior of Node.js. It's also recommended by the
   [official documentation](https://nodejs.org/api/process.html#process_warning_using_uncaughtexception_correctly).
-- we recommend using `exitOn: ['uncaughtException', 'unhandledRejection']`
+- we recommend using `['uncaughtException', 'unhandledRejection']`
   instead since this will be the [future default behavior of Node.js](https://nodejs.org/dist/latest-v8.x/docs/api/deprecations.html#deprecations_dep0018_unhandled_promise_rejections)
-- to prevent any `process.exit()`, use `exitOn: []`
+- to prevent any `process.exit()`, use `[]`
 
 `process.exit(1)` will only be fired after successfully logging the event.