add package for govendor (#1166)

* add package for govendor

* fix vet error.

Signed-off-by: Bo-Yi Wu <appleboy.tw@gmail.com>

* add missing example.

Signed-off-by: Bo-Yi Wu <appleboy.tw@gmail.com>

* update gin-gonic/autotls

Signed-off-by: Bo-Yi Wu <appleboy.tw@gmail.com>

README.md

@@ -1133,7 +1133,7 @@ func main() {
 
 example for 1-line LetsEncrypt HTTPS servers.
 
-[embedmd]:# (examples/auto-tls/example1.go go)
+[embedmd]:# (examples/auto-tls/example1/main.go go)
 ```go
 package main
 
@@ -1158,7 +1158,7 @@ func main() {
 
 example for custom autocert manager.
 
-[embedmd]:# (examples/auto-tls/example2.go go)
+[embedmd]:# (examples/auto-tls/example2/main.go go)
 ```go
 package main
 

vendor/vendor.json

@@ -22,10 +22,10 @@
 			"revisionTime": "2017-01-09T09:34:21Z"
 		},
 		{
-			"checksumSHA1": "FJKrZuFmeLJp8HDeJc6UkIDBPUw=",
+			"checksumSHA1": "+vZNyF2MykVjenLg1TpjjgjthV0=",
 			"path": "github.com/gin-gonic/autotls",
-			"revision": "5b3297bdcee778ff3bbdc99ab7c41e1c2677d22d",
-			"revisionTime": "2017-04-16T09:39:34Z"
+			"revision": "8ca25fbde72bb72a00466215b94b489c71fcb815",
+			"revisionTime": "2017-09-16T16:54:15Z"
 		},
 		{
 			"checksumSHA1": "qlPUeFabwF4RKAOF1H+yBFU1Veg=",
@@ -65,6 +65,12 @@
 			"revision": "976c720a22c8eb4eb6a0b4348ad85ad12491a506",
 			"revisionTime": "2016-09-25T22:06:09Z"
 		},
+		{
+			"checksumSHA1": "IopMW+arBezL5bqOfrVU6UEfn28=",
+			"path": "github.com/thinkerou/favicon",
+			"revision": "94a442a49da6e2d44bdd5e0d2e2e185c43a19d93",
+			"revisionTime": "2017-07-10T14:05:20Z"
+		},
 		{
 			"checksumSHA1": "CoxdaTYdPZNJXr8mJfLxye428N0=",
 			"path": "github.com/ugorji/go/codec",
@@ -90,6 +96,12 @@
 			"revision": "d4c55e66d8c3a2f3382d264b08e3e3454a66355a",
 			"revisionTime": "2016-10-18T08:54:36Z"
 		},
+		{
+			"checksumSHA1": "S0DP7Pn7sZUmXc55IzZnNvERu6s=",
+			"path": "golang.org/x/sync/errgroup",
+			"revision": "8e0aa688b654ef28caa72506fa5ec8dba9fc7690",
+			"revisionTime": "2017-07-19T03:38:01Z"
+		},
 		{
 			"checksumSHA1": "TVEkpH3gq84iQ39I4R+mlDwjuVI=",
 			"path": "golang.org/x/sys/unix",