Adding another ref and a disclosuredate to mihi's XPI module

Calling the disclosure date 2007 since TippingPoint published a blog
post back then about this XPI confirm-and-install vector.

modules/exploits/multi/browser/firefox_xpi_bootstrapped_addon.rb

@@ -35,8 +35,10 @@ class Metasploit3 < Msf::Exploit::Remote
 			'Author'        => [ 'mihi' ],
 			'References'    =>
 				[
-					[ 'URL', 'https://developer.mozilla.org/en/Extensions/Bootstrapped_extensions' ]
+					[ 'URL', 'https://developer.mozilla.org/en/Extensions/Bootstrapped_extensions' ],
+					[ 'URL', 'http://dvlabs.tippingpoint.com/blog/2007/06/27/xpi-the-next-malware-vector' ]
 				],
+			'DisclosureDate' => 'Jun 27 2007',
 			'Platform'      => [ 'java', 'win', 'osx', 'linux', 'solaris' ],
 			'Payload'       => { 'BadChars' => '', 'DisableNops' => true },
 			'Targets'       =>