Update clone command (#364)

Author: LitoMore

README.md

@@ -37,7 +37,7 @@ To understand more about the structure and the design of the Toolkit check out t
 This project uses [`lerna`](https://npm.im/lerna) as a tool to manage the monorepo. If you are unfamiliar with the tool, start by checking out the the [lerna docs](https://lerna.js.org/).
 
 ```bash
-git clone git@github.com:twilio-labs/serverless-toolkit.git serverless-toolkit
+git clone git@github.com:twilio-labs/serverless-toolkit.git
 cd serverless-toolkit
 npm install
 npm run bootstrap