gem install fullcontact

require "rubygems"
require "fullcontact"

# This could go in an initializer
FullContact.configure do |config|
	config.api_key = "fullcontact_api_key_goes_here"
end

# Get information about a email address
person = FullContact.person(email: "[email protected]")

# Get information about a twitter
person2 = FullContact.person(twitter: "brawest")

# Get person's family_name
puts person.contact_info.family_name