module Cloudinary::AuthToken

def self.merge_auth_token(token1, token2)

Requires to support Ruby 1.9
Merge token2 to token1 returning a new 
def self.merge_auth_token(token1, token2)
  token1 = token1 || EMPTY_TOKEN
  token2 = token2 || EMPTY_TOKEN
  token1 = token1.respond_to?( :to_h) ? token1.to_h : token1
  token2 = token2.respond_to?( :to_h) ? token2.to_h : token2
  token1.merge(token2)
end