This issue is to add an [axios ](https://github.com/axios/axios) conversion. I saw [PR 148](https://github.com/Kong/httpsnippet/pull/148) but didn't see why it was closed, or if those changes have just been lost. I'd be happy to do the implementation and open a PR for it, just wanted to check if there's a reason the other PR was rejected. Thanks!