Client#initialize params are api_url and api_key.
Updated dependecies, dotenv added.

API url and key will be kept in 'env' file for running tests.
Client creates Faraday connector.

Connector points to api_url and send ApiKey url param by default.
Response class.

Wraps Faraday response.
Endpoint example in client.

Currently only to have something to do testing on.
Spec helper for endpoints.

Configures VCR and webmocks.