Restructure Lyft Client

[skukx]

This version contains some gem restructuring. Restructures include
switching from HTTParty to Faraday, Client API changes, and doing away
with VCR.

Changes to note are how parameters are passed when making api calls. The
access_token is now passed in separately from the rest of the arguments
forwarded to lyft.
For example:

client.availability.cost access_token: 'access_token',
                         start_lat: 37.7772,
                         start_lng: -122.4233,
                         end_lat: 37.7972,
                         end_lng: -122.4533

Should be changed to:

client.availability.cost access_token: 'access_token',
                         params: {
                           start_lat: 37.7772,
                           start_lng: -122.4233,
                           end_lat: 37.7972,
                           end_lng: -122.4533
                         }