Merge pull request #1064 from bitsapien/patch-2

Grammar correction

README.md

@@ -428,7 +428,7 @@ end
 
 On error, the job is scheduled again in 5 seconds + N ** 4, where N is the number of attempts or using the job's defined `reschedule_at` method.
 
-The default `Worker.max_attempts` is 25. After this, the job either deleted (default), or left in the database with "failed_at" set.
+The default `Worker.max_attempts` is 25. After this, the job is either deleted (default), or left in the database with "failed_at" set.
 With the default of 25 attempts, the last retry will be 20 days later, with the last interval being almost 100 hours.
 
 The default `Worker.max_run_time` is 4.hours. If your job takes longer than that, another computer could pick it up. It's up to you to