Added other badge styles

This is not ready to merge. I have never written Clojure before.

Basically I would like to add extra style options to the badges.

This is the default one
![](https://circleci.com/gh/madewithlove/elasticsearcher.svg)

This is `?style=svg`

![](https://circleci.com/gh/madewithlove/elasticsearcher.svg?style=svg)

And this is `?style=shield`

![](https://circleci.com/gh/madewithlove/elasticsearcher.svg?style=shield)

It would be easy to add two new styles `flat` and `flat-square` by leveraging the power of [shields.io](http://shields.io)

Todo: add these styles. All you need to do is to forward the source, or redirect the client with a `302 Found`.

This is `?style=flat`

![](https://img.shields.io/badge/circleci-failing-red.svg?style=flat)

And this is `?style=flat-square`

![](https://img.shields.io/badge/circleci-failing-red.svg?style=flat-square)