Add go installer for Go packages.

lib/sprinkle/installers/go.rb

@@ -0,0 +1,43 @@
+module Sprinkle
+  module Installers
+    # The go package installer installs Go package.
+    #
+    #
+    # == Example Usage
+    #
+    # A simple installation:
+    #
+    #   package :magic_beans do
+    #     description "Beans beans they're good for your heart..."
+    #     go 'magic_beans'
+    #   end
+    #
+    # You may also specify multiple packages as an array:
+    #
+    #   package :magic_beans do
+    #     go %w(magic_beans magic_sauce)
+    #   end
+    #
+    class Go < PackageInstaller
+
+      ##
+      # installs the Go packages passed
+      # :method: go
+      # :call-seq: go(*packages)
+      auto_api :go
+
+      verify_api do
+        def has_go(package)
+          @commands << " go list '...' | grep  -E '^#{package}$'"
+        end
+      end
+
+      protected
+
+        def install_commands #:nodoc:
+          cmd = "#{sudo_cmd}go get #{@packages.join(' ')}"
+        end
+
+    end
+  end
+end