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/gosrc/golang.go

@@ -0,0 +1,65 @@
+// Copyright 2014 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 gosrc
+
+import (
+	"errors"
+	"net/http"
+	"regexp"
+	"strings"
+)
+
+var (
+	golangBuildVersionRe = regexp.MustCompile(`Build version ([-+:. 0-9A-Za-z]+)`)
+	golangFileRe         = regexp.MustCompile(`<a href="([^"]+)"`)
+)
+
+func getStandardDir(client *http.Client, importPath string, savedEtag string) (*Directory, error) {
+	c := &httpClient{client: client}
+
+	browseURL := "https://golang.org/src/" + importPath + "/"
+	p, err := c.getBytes(browseURL)
+	if err != nil {
+		return nil, err
+	}
+
+	var etag string
+	m := golangBuildVersionRe.FindSubmatch(p)
+	if m == nil {
+		return nil, errors.New("Could not find revision for " + importPath)
+	}
+	etag = strings.Trim(string(m[1]), ". ")
+	if etag == savedEtag {
+		return nil, NotModifiedError{}
+	}
+
+	var files []*File
+	var dataURLs []string
+	for _, m := range golangFileRe.FindAllSubmatch(p, -1) {
+		fname := string(m[1])
+		if isDocFile(fname) {
+			files = append(files, &File{Name: fname, BrowseURL: browseURL + fname})
+			dataURLs = append(dataURLs, browseURL+fname+"?m=text")
+		}
+	}
+
+	if err := c.getFiles(dataURLs, files); err != nil {
+		return nil, err
+	}
+
+	return &Directory{
+		BrowseURL:    browseURL,
+		Etag:         etag,
+		Files:        files,
+		ImportPath:   importPath,
+		LineFmt:      "%s#L%d",
+		ProjectName:  "Go",
+		ProjectRoot:  "",
+		ProjectURL:   "https://golang.org/",
+		ResolvedPath: importPath,
+	}, nil
+}