email gravatar each loop. outputs a hash of all the emails input

gravatar_array_loop.rb

require 'digest/md5'
# make an email array for images you want to find
array_emails = ["email1", ...]
# make a new hash to store email:image_url as a key value pair
hash_email_image = {}

def gravatar_for(email, options = { size: 50 })
  gravatar_id = Digest::MD5::hexdigest(email.downcase)
  size = options[:size]
  gravatar_url = "https://secure.gravatar.com/avatar/#{gravatar_id}?s=#{size}"
  hash_email_image[email] = gravatar_url
end

array_emails.each do |email|
  gravatar_for(email)
end

puts hash_email_image