Ruby 1.9 doesn‘t provide base64, so we wrap this here

Methods
Public Class methods
decode64(data)
    # File lib/active_support/base64.rb, line 17
17:       def self.decode64(data)
18:         data.unpack("m").first
19:       end
encode64(data)
    # File lib/active_support/base64.rb, line 13
13:       def self.encode64(data)
14:         [data].pack("m")
15:       end