ElisarEisenbach

- when `CurrentIndex` == `len(Responses)` it means that if you will try to get responses[CurrentIndex] will make out of index panic. we are expecting to panic [from here](https://github.com/ElisarEisenbach/go-github-mock/blob/bb3d3b6b1968538665a5143c9124dc0bb8768394/src/mock/server.go#L41-L44) - fix...

## Motivation Send a track event for each session occurred in app ## Changelog added analytics util to send request to analytics server