Merge pull request #6 from itaditya/patch-1

named export instead of default export

Author: JasonEtco

README.md

@@ -8,8 +8,8 @@ $ npm install @probot/serverless-lambda
 ```
 
 ```javascript
-# handler.js
-const serverless = require('@probot/serverless-lambda')
+// handler.js
+const { serverless } = require('@probot/serverless-lambda')
 const appFn = require('./')
 module.exports.probot = serverless(appFn)
 ```