Buying postage with EasyPost and Ruby

easypost_buypostage.rb

require "easypost"

Easypost.api_key = "ek_0HbTD15HeT6RFTwCKoUQ7rrB2NzMZ"
EasyPost::Postage.buy(
  :parcel => {
    :weight => 1.1,
    :height => 12,
    :width => 14,
    :length => 7
  },
  :to => {
    :name => "Reed Rothchild",
    :street1 => "101 California St",
    :street2 => "Suite 1290",
    :city => "San Francisco",
    :state => "CA",
    :zip => "94111"
  },
  :from => {
    :name => "Dirk Diggler",
    :phone => "3108085243",
    :street1 => "300 Granelli Ave",
    :city => "Half Moon Bay",
    :state => "CA",
    :zip => "94019"
  },
  :carrier => "USPS",
  :service => "Express"
)