Merge pull request #702 from capaj/patch-1

Clarifying status of cancelable promises proposal

README.md

@@ -473,7 +473,7 @@ axios.get('/user/12345', {
 
 You can cancel a request using a *cancel token*.
 
-> The axios cancel token API is based on the [cancelable promises proposal](https://github.com/tc39/proposal-cancelable-promises), which is currently at Stage 1.
+> The axios cancel token API is based on the withdrawn [cancelable promises proposal](https://github.com/tc39/proposal-cancelable-promises).
 
 You can create a cancel token using the `CancelToken.source` factory as shown below: