update description

Author: tunnckoCore

README.md

@@ -1,6 +1,6 @@
 # [is-async-function][author-www-url] [![npmjs.com][npmjs-img]][npmjs-url] [![The MIT License][license-img]][license-url] 
 
-> Is function really asynchronous (callback) function? Trying to guess that based on check if `callback`, `cb`, `done`, `next` exists as function argument names - or you can pass you custom.
+> Is function really asynchronous (callback) function? Trying to guess that based on check if `callback`, `cb`, `done`, `next` exists as function arguments names or you can pass your custom.
 
 [![code climate][codeclimate-img]][codeclimate-url] [![standard code style][standard-img]][standard-url] [![travis build status][travis-img]][travis-url] [![coverage status][coveralls-img]][coveralls-url] [![dependency status][david-img]][david-url]
 

package.json

@@ -1,7 +1,7 @@
 {
   "name": "is-async-function",
   "version": "1.1.0",
-  "description": "Is function really asynchronous (callback) function? Trying to guess that based on check if `callback`, `cb`, `done`, `next` exists as function argument names - or you can pass you custom.",
+  "description": "Is function really asynchronous (callback) function? Trying to guess that based on check if `callback`, `cb`, `done`, `next` exists as function arguments names or you can pass your custom.",
   "repository": "tunnckoCore/is-async-function",
   "author": "Charlike Mike Reagent <@tunnckoCore> (http://www.tunnckocore.tk)",
   "precommit.silent": true,