chore(package): update async to version 2.0.1
chore(package): update async to version 2.0.1

https://greenkeeper.io/
gcoonrod/actionhero,actionhero/actionhero,witem/actionhero,witem/actionhero,crrobinson14/actionhero,actionhero/actionhero,witem/actionhero,chimmelb/actionhero,crrobinson14/actionhero,witem/actionhero,gcoonrod/actionhero,actionhero/actionhero,S3bb1/actionhero,actionhero/actionhero,chimmelb/actionhero,S3bb1/actionhero,gcoonrod/actionhero,gcoonrod/actionhero,chimmelb/actionhero,crrobinson14/actionhero,S3bb1/actionhero