Sailthru gem usage

sailthru_client_usage.rb

require 'rubygems'
require 'date'
require 'json'
require 'sailthru'

api_key = "api_key"
api_secret = 'secret'
api_url = "https://api.sailthru.coma"
sailthru = Sailthru::SailthruClient.new(api_key, api_secret, api_url)

begin
    template_name = 'my-template'
    email = '[email protected]'
    vars = {'name' => 'Prajwal Tuladhar', "myvar" => [1111,2,3]}
    options = {'test' => 1}
    schedule_time = '+3 hours'
    response = sailthru.send(template_name, email, vars, options, schedule_time)
    if response['error'] == nil
        # everything is OK
        # do something
        
    else
        # error response from server or invalid JSON format
    end
rescue Sailthru::SailthruClientException => e
    # catch exception here
    print e
end