docs(token): what scopes are needed for the token

Closes #3

README.md

@@ -110,7 +110,7 @@ Use [github-remove-all-releases](https://github.com/stevemao/github-remove-all-r
 
 ### How do I setup my token for cli?
 
-[Create a new token](https://github.com/settings/tokens/new) and set your environment variable `CONVENTIONAL_GITHUB_RELEASER_TOKEN` to the token you just created. You can google [How to set environment variable](https://www.google.com.au/webhp?sourceid=chrome-instant&ion=1&espv=2&ie=UTF-8#q=how%20to%20set%20environment%20variable)
+[Create a new token](https://github.com/settings/tokens/new) and set your environment variable `CONVENTIONAL_GITHUB_RELEASER_TOKEN` to the token you just created. You can google [How to set environment variable](https://www.google.com.au/webhp?sourceid=chrome-instant&ion=1&espv=2&ie=UTF-8#q=how%20to%20set%20environment%20variable). The scopes for the token you need is `public_repo` or `repo` (if you need to access private repos). [More details](https://developer.github.com/v3/oauth/#scopes).
 
 
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