Add packages/go.rb

packages/go.rb

+require 'package'
+
+class Go < Package
+  version '1.4.1'
+  source_url 'https://storage.googleapis.com/golang/go1.4.1.src.tar.gz'
+  source_sha1 'c7a683e8d39b835e333199d68d0c0baefcd24a68'
+
+  def self.build
+    FileUtils.cd('src') do
+      system "./all.bash"
+    end
+  end
+
+  def self.install
+    system "cp ../go -r /usr/local/lib/"
+    if File.file?('/usr/local/bin/go')
+      system "sudo rm /usr/local/bin/go"
+    end
+    if File.file?('/usr/local/bin/gofmt')
+      system "sudo rm /usr/local/bin/gofmt"
+    end
+    if File.file?('/usr/local/bin/godoc')
+      system "sudo rm /usr/local/bin/godoc"
+    end
+    
+    system "sudo cp -r /usr/local/tmp/go /usr/local/lib/"
+    system "sudo ln -s /usr/local/lib/go/bin/go /usr/local/bin/go"
+    system "sudo ln -s /usr/local/lib/go/bin/godoc /usr/local/bin/godoc"
+    system "sudo ln -s /usr/local/lib/go/bin/gofmt /usr/local/bin/gofmt"
+    
+    puts "---\nCorrected\n---"
+    puts "Installed Go for linux/amd64 in /usr/local/lib/go"
+    puts "Installed commands in /usr/local/bin"
+  end
+end