Merge pull request #88 from Tivoli/tivs/issue-86-unable-to-install-iojs

Update iojs to v2.3.4 and fix issue skycocker/chromebrew#86 add pytho…

packages/iojs.rb

 require 'package'
 
 class Iojs < Package
-  version '2.2.1'
-  source_url 'https://iojs.org/dist/v2.2.1/iojs-v2.2.1.tar.gz'
-  source_sha1 '2b4a43cc1333526cbc5ac2e30d765a4d9c26427c'
+  version '2.4.0'
+  source_url 'https://iojs.org/dist/v2.4.0/iojs-v2.4.0.tar.gz'
+  source_sha1 'ec273ab80421126c304a6910d8780cae4cbc1276'
 
   depends_on 'buildessential'
+  depends_on 'python27'
 
   def self.build
-    system "./configure"
+    system "CC='gcc' ./configure"
     system "make"
   end