output the proper architecture

packages/go.rb

@@ -29,7 +29,7 @@ class Go < Package
     FileUtils.mv Dir.pwd, dest
 
     puts "--------"
-    puts "Installed Go for linux/amd64 in /usr/local/lib/go"
+    puts "Installed Go for #{ARCH} in /usr/local/lib/go"
     puts "Make sure to set go environment variables."
     puts "Minimal:"
     puts "\texport GOROOT=/usr/local/lib/go"

packages/go_bootstrap.rb

@@ -17,6 +17,6 @@ class Go_bootstrap < Package
     FileUtils.mv Dir.pwd, dest
     
     puts "--------"
-    puts "Installed Go_bootstrap for linux/amd64 in /usr/local/lib/go_bootstrap"
+    puts "Installed Go_bootstrap for #{ARCH} in /usr/local/lib/go_bootstrap"
   end
 end
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