luajit fix+binary

packages/luajit.rb

@@ -7,6 +7,17 @@ class Luajit < Package
   source_url 'http://luajit.org/download/LuaJIT-2.0.5.tar.gz'
   source_sha256 '874b1f8297c697821f561f9b73b57ffd419ed8f4278c82e05b48806d30c1e979'
 
+  binary_url ({
+    x86_64: 'https://github.com/yancouto/chromebrew/releases/download/bin/luajit-2.0.5-chromeos-x86_64.tar.xz'
+  })
+
+  binary_sha256 ({
+    x86_64: 'bba89cae837d6e88a4f1b9dcaa135ef4af1d6ecbd20358c33b034813a51597b4'
+  })
+
+  depends_on 'buildessential' => :build
+  depends_on 'make' => :build
+
   def self.build
     system 'make'
   end