#AccessToken.rb
require 'rubygems'
require 'rest-client' #https://github.com/rest-client/rest-client
require 'json'

key='YOUR API KEY HERE'
secret='YOUR API SECRET HERE'

url='https://apicurrent-app.booker.ninja/WebService4/json/CustomerService.svc/access_token?client_id='+key+'&client_secret='+secret+'&grant_type=client_credentials'

response = RestClient.get(url)

puts JSON.parse(response.body)