Create minimalistic uberVU API client

## Need

```gherkin
As a PHP developer looking to integrate with the uberVU API
I want a simple and minimalistic REST api client written in PHP
So that I can easily interact with uberVU in an automated way.
```

## Deliverables
* [ ] REST API client written on top of [Guzzle](https://guzzle.readthedocs.org/en/latest/) (how did I choose Guzzle? small research on my side)

## Solution

#### Prerequisites
- [ ] API key authentication mechanism (`email` and `apikey` parameters) on the uberVU side