Add homebrew support (fix #6)

contrib/homebrew/anonuuid.rb

@@ -0,0 +1,33 @@
+require "language/go"
+
+class Anonuuid < Formula
+  desc "Anonymize streams"
+  homepage "https://github.com/moul/anonuuid"
+  url "https://github.com/moul/anonuuid/archive/v1.0.0.tar.gz"
+  sha256 "37d6ff3931276c7e8eac6d8d5c34d0deb1a649567dc2c4756fc4f74637a0eb51"
+
+  head "https://github.com/moul/anonuuid.git"
+
+  depends_on "go" => :build
+
+  def install
+    ENV["GOPATH"] = buildpath
+    ENV["CGO_ENABLED"] = "0"
+    ENV.prepend_create_path "PATH", buildpath/"bin"
+
+    mkdir_p buildpath/"src/github.com/moul"
+    ln_s buildpath, buildpath/"src/github.com/moul/anonuuid"
+    Language::Go.stage_deps resources, buildpath/"src"
+
+    system "go", "get", "github.com/codegangsta/cli"
+    system "go", "build", "-o", "anonuuid", "./cmd/anonuuid"
+    bin.install "anonuuid"
+
+    # FIXME: add autocompletion
+  end
+
+  test do
+    output = shell_output(bin/"anonuuid --version")
+    assert output.include? "anonuuid version"
+  end
+end