Major rewrite

* use dep for vendoring
* lets encrypt
* moved web to transfer.sh-web repo
* single command install
* added first tests

vendor/github.com/golang/gddo/gddo-server/graph.go

@@ -0,0 +1,48 @@
+// Copyright 2013 The Go Authors. All rights reserved.
+//
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file or at
+// https://developers.google.com/open-source/licenses/bsd.
+
+package main
+
+import (
+	"bytes"
+	"errors"
+	"fmt"
+	"os/exec"
+	"strings"
+
+	"github.com/golang/gddo/database"
+	"github.com/golang/gddo/doc"
+)
+
+func renderGraph(pdoc *doc.Package, pkgs []database.Package, edges [][2]int) ([]byte, error) {
+	var in, out bytes.Buffer
+
+	fmt.Fprintf(&in, "digraph %s { \n", pdoc.Name)
+	for i, pkg := range pkgs {
+		fmt.Fprintf(&in, " n%d [label=\"%s\", URL=\"/%s\", tooltip=\"%s\"];\n",
+			i, pkg.Path, pkg.Path,
+			strings.Replace(pkg.Synopsis, `"`, `\"`, -1))
+	}
+	for _, edge := range edges {
+		fmt.Fprintf(&in, " n%d -> n%d;\n", edge[0], edge[1])
+	}
+	in.WriteString("}")
+
+	cmd := exec.Command("dot", "-Tsvg")
+	cmd.Stdin = &in
+	cmd.Stdout = &out
+	if err := cmd.Run(); err != nil {
+		return nil, err
+	}
+
+	p := out.Bytes()
+	i := bytes.Index(p, []byte("<svg"))
+	if i < 0 {
+		return nil, errors.New("<svg not found")
+	}
+	p = p[i:]
+	return p, nil
+}