diff --git a/.gitignore b/.gitignore
index 76671bd..b8151a3 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,4 +1,3 @@
-Gopkg.lock
 coverage.out
 rrh
 vendor
diff --git a/Gopkg.lock b/Gopkg.lock
new file mode 100644
index 0000000..48b25eb
--- /dev/null
+++ b/Gopkg.lock
@@ -0,0 +1,292 @@
+# This file is autogenerated, do not edit; changes may be undone by the next 'dep ensure'.
+
+
+[[projects]]
+  digest = "1:c47f4964978e211c6e566596ec6246c329912ea92e9bb99c00798bb4564c5b09"
+  name = "github.com/armon/go-radix"
+  packages = ["."]
+  pruneopts = "UT"
+  revision = "1a2de0c21c94309923825da3df33a4381872c795"
+  version = "v1.0.0"
+
+[[projects]]
+  digest = "1:1343a2963481a305ca4d051e84bc2abd16b601ee22ed324f8d605de1adb291b0"
+  name = "github.com/bgentry/speakeasy"
+  packages = ["."]
+  pruneopts = "UT"
+  revision = "4aabc24848ce5fd31929f7d1e4ea74d3709c14cd"
+  version = "v0.1.0"
+
+[[projects]]
+  digest = "1:6f9339c912bbdda81302633ad7e99a28dfa5a639c864061f1929510a9a64aa74"
+  name = "github.com/dustin/go-humanize"
+  packages = ["."]
+  pruneopts = "UT"
+  revision = "9f541cc9db5d55bce703bd99987c9d5cb8eea45e"
+  version = "v1.0.0"
+
+[[projects]]
+  digest = "1:b498b36dbb2b306d1c5205ee5236c9e60352be8f9eea9bf08186723a9f75b4f3"
+  name = "github.com/emirpasic/gods"
+  packages = [
+    "containers",
+    "lists",
+    "lists/arraylist",
+    "trees",
+    "trees/binaryheap",
+    "utils",
+  ]
+  pruneopts = "UT"
+  revision = "1615341f118ae12f353cc8a983f35b584342c9b3"
+  version = "v1.12.0"
+
+[[projects]]
+  digest = "1:865079840386857c809b72ce300be7580cb50d3d3129ce11bf9aa6ca2bc1934a"
+  name = "github.com/fatih/color"
+  packages = ["."]
+  pruneopts = "UT"
+  revision = "5b77d2a35fb0ede96d138fc9a99f5c9b6aef11b4"
+  version = "v1.7.0"
+
+[[projects]]
+  digest = "1:0ade334594e69404d80d9d323445d2297ff8161637f9b2d347cc6973d2d6f05b"
+  name = "github.com/hashicorp/errwrap"
+  packages = ["."]
+  pruneopts = "UT"
+  revision = "8a6fb523712970c966eefc6b39ed2c5e74880354"
+  version = "v1.0.0"
+
+[[projects]]
+  digest = "1:f668349b83f7d779567c880550534addeca7ebadfdcf44b0b9c39be61864b4b7"
+  name = "github.com/hashicorp/go-multierror"
+  packages = ["."]
+  pruneopts = "UT"
+  revision = "886a7fbe3eb1c874d46f623bfa70af45f425b3d1"
+  version = "v1.0.0"
+
+[[projects]]
+  branch = "master"
+  digest = "1:62fe3a7ea2050ecbd753a71889026f83d73329337ada66325cbafd5dea5f713d"
+  name = "github.com/jbenet/go-context"
+  packages = ["io"]
+  pruneopts = "UT"
+  revision = "d14ea06fba99483203c19d92cfcd13ebe73135f4"
+
+[[projects]]
+  digest = "1:ae5f4d0779a45e2cb3075d8b3ece6c623e171407f4aac83521392ff06d188871"
+  name = "github.com/kevinburke/ssh_config"
+  packages = ["."]
+  pruneopts = "UT"
+  revision = "81db2a75821ed34e682567d48be488a1c3121088"
+  version = "0.5"
+
+[[projects]]
+  digest = "1:c658e84ad3916da105a761660dcaeb01e63416c8ec7bc62256a9b411a05fcd67"
+  name = "github.com/mattn/go-colorable"
+  packages = ["."]
+  pruneopts = "UT"
+  revision = "167de6bfdfba052fa6b2d3664c8f5272e23c9072"
+  version = "v0.0.9"
+
+[[projects]]
+  digest = "1:e150b5fafbd7607e2d638e4e5cf43aa4100124e5593385147b0a74e2733d8b0d"
+  name = "github.com/mattn/go-isatty"
+  packages = ["."]
+  pruneopts = "UT"
+  revision = "c2a7a6ca930a4cd0bc33a3f298eb71960732a3a7"
+  version = "v0.0.7"
+
+[[projects]]
+  digest = "1:dac0667a3fcdd4102a5da07abeddc89eb2f125b1e91af1ea9544c80eaff19c9a"
+  name = "github.com/mitchellh/cli"
+  packages = ["."]
+  pruneopts = "UT"
+  revision = "3d22a244be8aa6fb16ac24af0e195c08b7d973aa"
+  version = "v1.0.0"
+
+[[projects]]
+  digest = "1:5d231480e1c64a726869bc4142d270184c419749d34f167646baa21008eb0a79"
+  name = "github.com/mitchellh/go-homedir"
+  packages = ["."]
+  pruneopts = "UT"
+  revision = "af06845cf3004701891bf4fdb884bfe4920b3727"
+  version = "v1.1.0"
+
+[[projects]]
+  digest = "1:b2ee62e09bec113cf086d2ce0769efcc7bf79481aba8373fd8f7884e94df3462"
+  name = "github.com/pelletier/go-buffruneio"
+  packages = ["."]
+  pruneopts = "UT"
+  revision = "c37440a7cf42ac63b919c752ca73a85067e05992"
+  version = "v0.2.0"
+
+[[projects]]
+  digest = "1:57e168c6dfcc02c1c53bdf1589afbef59694d819cac65bfd3a855de2256d4950"
+  name = "github.com/posener/complete"
+  packages = [
+    ".",
+    "cmd",
+    "cmd/install",
+    "match",
+  ]
+  pruneopts = "UT"
+  revision = "3ef9b31a6a0613ae832e7ecf208374027c3b2343"
+  version = "v1.2.1"
+
+[[projects]]
+  digest = "1:d917313f309bda80d27274d53985bc65651f81a5b66b820749ac7f8ef061fd04"
+  name = "github.com/sergi/go-diff"
+  packages = ["diffmatchpatch"]
+  pruneopts = "UT"
+  revision = "1744e2970ca51c86172c8190fadad617561ed6e7"
+  version = "v1.0.0"
+
+[[projects]]
+  digest = "1:e4ed0afd67bf7be353921665cdac50834c867ff1bba153efc0745b755a7f5905"
+  name = "github.com/src-d/gcfg"
+  packages = [
+    ".",
+    "scanner",
+    "token",
+    "types",
+  ]
+  pruneopts = "UT"
+  revision = "1ac3a1ac202429a54835fe8408a92880156b489d"
+  version = "v1.4.0"
+
+[[projects]]
+  digest = "1:172f94a6b3644a8f9e6b5e5b7fc9fe1e42d424f52a0300b2e7ab1e57db73f85d"
+  name = "github.com/xanzy/ssh-agent"
+  packages = ["."]
+  pruneopts = "UT"
+  revision = "6a3e2ff9e7c564f36873c2e36413f634534f1c44"
+  version = "v0.2.1"
+
+[[projects]]
+  branch = "master"
+  digest = "1:064d74d9e136de7ce5c4a47ab251a887fb69e2ada13db9cce2687e54f8784596"
+  name = "golang.org/x/crypto"
+  packages = [
+    "cast5",
+    "curve25519",
+    "ed25519",
+    "ed25519/internal/edwards25519",
+    "internal/chacha20",
+    "internal/subtle",
+    "openpgp",
+    "openpgp/armor",
+    "openpgp/elgamal",
+    "openpgp/errors",
+    "openpgp/packet",
+    "openpgp/s2k",
+    "poly1305",
+    "ssh",
+    "ssh/agent",
+    "ssh/knownhosts",
+  ]
+  pruneopts = "UT"
+  revision = "b7391e95e576cacdcdd422573063bc057239113d"
+
+[[projects]]
+  branch = "master"
+  digest = "1:76ee51c3f468493aff39dbacc401e8831fbb765104cbf613b89bef01cf4bad70"
+  name = "golang.org/x/net"
+  packages = ["context"]
+  pruneopts = "UT"
+  revision = "1272bf9dcd53ea65c09668fb4c76e65deb740072"
+
+[[projects]]
+  branch = "master"
+  digest = "1:51e9c8a64ecddbba456f24b2119aade9dc8e062fc6d10b30548f75f483e08b76"
+  name = "golang.org/x/sys"
+  packages = [
+    "cpu",
+    "unix",
+    "windows",
+  ]
+  pruneopts = "UT"
+  revision = "f7bb7a8bee54210937e93ec56d007d892c1f0580"
+
+[[projects]]
+  digest = "1:866df945fc92cd221d2b384dca7de5f3131a6113b9f72a7a8019ae5046abe828"
+  name = "gopkg.in/src-d/go-billy.v4"
+  packages = [
+    ".",
+    "helper/chroot",
+    "helper/polyfill",
+    "osfs",
+    "util",
+  ]
+  pruneopts = "UT"
+  revision = "982626487c60a5252e7d0b695ca23fb0fa2fd670"
+  version = "v4.3.0"
+
+[[projects]]
+  digest = "1:44801e4be7066a82dc7a7f608d31f99c5c0f5a65a0215b37401a5657ce52940d"
+  name = "gopkg.in/src-d/go-git.v4"
+  packages = [
+    ".",
+    "config",
+    "internal/revision",
+    "internal/url",
+    "plumbing",
+    "plumbing/cache",
+    "plumbing/filemode",
+    "plumbing/format/config",
+    "plumbing/format/diff",
+    "plumbing/format/gitignore",
+    "plumbing/format/idxfile",
+    "plumbing/format/index",
+    "plumbing/format/objfile",
+    "plumbing/format/packfile",
+    "plumbing/format/pktline",
+    "plumbing/object",
+    "plumbing/protocol/packp",
+    "plumbing/protocol/packp/capability",
+    "plumbing/protocol/packp/sideband",
+    "plumbing/revlist",
+    "plumbing/storer",
+    "plumbing/transport",
+    "plumbing/transport/client",
+    "plumbing/transport/file",
+    "plumbing/transport/git",
+    "plumbing/transport/http",
+    "plumbing/transport/internal/common",
+    "plumbing/transport/server",
+    "plumbing/transport/ssh",
+    "storage",
+    "storage/filesystem",
+    "storage/filesystem/dotgit",
+    "storage/memory",
+    "utils/binary",
+    "utils/diff",
+    "utils/ioutil",
+    "utils/merkletrie",
+    "utils/merkletrie/filesystem",
+    "utils/merkletrie/index",
+    "utils/merkletrie/internal/frame",
+    "utils/merkletrie/noder",
+  ]
+  pruneopts = "UT"
+  revision = "db6c41c156481962abf9a55a324858674c25ab08"
+  version = "v4.10.0"
+
+[[projects]]
+  digest = "1:78d374b493e747afa9fbb2119687e3740a7fb8d0ebabddfef0a012593aaecbb3"
+  name = "gopkg.in/warnings.v0"
+  packages = ["."]
+  pruneopts = "UT"
+  revision = "ec4a0fea49c7b46c2aeb0b51aac55779c607e52b"
+  version = "v0.1.2"
+
+[solve-meta]
+  analyzer-name = "dep"
+  analyzer-version = 1
+  input-imports = [
+    "github.com/dustin/go-humanize",
+    "github.com/mitchellh/cli",
+    "gopkg.in/src-d/go-git.v4",
+    "gopkg.in/src-d/go-git.v4/plumbing",
+  ]
+  solver-name = "gps-cdcl"
+  solver-version = 1
diff --git a/Makefile b/Makefile
index d6ffb38..80c2931 100644
--- a/Makefile
+++ b/Makefile
@@ -9,19 +9,17 @@ setup:
 	go get golang.org/x/tools/cmd/goimports
 	go get github.com/golang/dep/cmd/dep
 
-	go get github.com/mitchellh/cli
-	go get gopkg.in/src-d/go-git.v4
-	go get github.com/dustin/go-humanize
 	go get github.com/posener/complete/gocomplete
 	go get golang.org/x/tools/cmd/cover
 	go get github.com/mattn/goveralls
 
+	dep ensure -vendor-only
+
 test: update
 	go test -covermode=count -coverprofile=coverage.out $$(go list ./... | grep -v vendor)
 	git checkout -- testdata
 
 update: setup
-	dep ensure
 	git submodule update --init
 
 build: update test
diff --git a/README.md b/README.md
index 9c00a6a..c1adadd 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,7 @@
 [![Build Status](https://travis-ci.org/tamada/rrh.svg?branch=master)](https://travis-ci.org/tamada/rrh)
 [![Coverage Status](https://coveralls.io/repos/github/tamada/rrh/badge.svg?branch=master)](https://coveralls.io/github/tamada/rrh?branch=master)
 [![codebeat badge](https://codebeat.co/badges/15e04551-d448-4ad3-be1d-e98b1e586f1a)](https://codebeat.co/projects/github-com-tamada-rrh-master)
+[![go report](https://goreportcard.com/badge/github.com/tamada/rrh)](https://goreportcard.com/report/github.com/tamada/rrh)
 [![License](https://img.shields.io/badge/License-Apache_2.0-blue.svg)](https://opensource.org/licenses/Apache-2.0)
 
 # RRH
@@ -51,6 +52,18 @@ RRH is now growing. Please hack RRH itself.
 
 # Installation
 
+## Homebrew
+
+Install rrh via [Homebrew](https://brew.sh), simply run:
+
+```sh
+$ brew tap tamada/rrh
+$ brew install rrh
+```
+
+
+## Go lang
+
 To install cli, simply run:
 
 ```
diff --git a/clone/clone_cmd.go b/clone/clone_cmd.go
index 7cdb500..d04a5b6 100644
--- a/clone/clone_cmd.go
+++ b/clone/clone_cmd.go
@@ -28,7 +28,7 @@ Help function shows the help message.
 func (clone *CloneCommand) Help() string {
 	return `rrh clone [OPTIONS] <REMOTE_REPOS...>
 OPTIONS
-    -g, --group <GROUP>   print managed repositories categoried in the group.
+    -g, --group <GROUP>   print managed repositories categorized in the group.
     -d, --dest <DEST>     specify the destination.
     -v, --verbose         verbose mode.
 ARGUMENTS
diff --git a/clone/clone_test.go b/clone/clone_test.go
index 6d9add6..345c7e6 100644
--- a/clone/clone_test.go
+++ b/clone/clone_test.go
@@ -154,7 +154,7 @@ func TestCloneNotGitRepository(t *testing.T) {
 func TestHelpAndSynopsis(t *testing.T) {
 	var helpMessage = `rrh clone [OPTIONS] <REMOTE_REPOS...>
 OPTIONS
-    -g, --group <GROUP>   print managed repositories categoried in the group.
+    -g, --group <GROUP>   print managed repositories categorized in the group.
     -d, --dest <DEST>     specify the destination.
     -v, --verbose         verbose mode.
 ARGUMENTS
diff --git a/common/database_test.go b/common/database_test.go
index ff714ea..4ace030 100644
--- a/common/database_test.go
+++ b/common/database_test.go
@@ -151,7 +151,7 @@ func TestCreateRepository(t *testing.T) {
 		t.Error(err1.Error())
 	}
 
-	var r2, err2 = db.CreateRepository("somerepo", "unknown", []Remote{Remote{"name1", "url1"}, Remote{"name2", "url2"}})
+	var r2, err2 = db.CreateRepository("somerepo", "unknown", []Remote{{"name1", "url1"}, {"name2", "url2"}})
 	if r2 == nil && err2 != nil {
 		t.Error("somerepo: cannot create repository")
 	}
@@ -265,9 +265,9 @@ func TestHasGroup(t *testing.T) {
 		t.Error("rrh: no relation with no-group")
 	}
 	if db.HasRelation("unknown", "rrh") {
-		t.Error("rrh: unknown relatin found!")
+		t.Error("rrh: unknown relation found!")
 	}
 	if db.HasRelation("no-group", "unknown") {
-		t.Error("unknown relatin in no-group found!")
+		t.Error("unknown relation in no-group found!")
 	}
 }
diff --git a/common/util.go b/common/util.go
index d68a008..dbe5edf 100644
--- a/common/util.go
+++ b/common/util.go
@@ -55,7 +55,7 @@ func Strftime(before time.Time, config *Config) string {
 }
 
 /*
-CaptureStdout is refered from https://qiita.com/kami_zh/items/ff636f15da87dabebe6c.
+CaptureStdout is referred from https://qiita.com/kami_zh/items/ff636f15da87dabebe6c.
 */
 func CaptureStdout(f func()) (string, error) {
 	r, w, err := os.Pipe()
diff --git a/list/list_test.go b/list/list_test.go
index f12a005..18df871 100644
--- a/list/list_test.go
+++ b/list/list_test.go
@@ -81,7 +81,7 @@ func TestFindResults(t *testing.T) {
 		targets []string
 		want    []ListResult
 	}{
-		{[]string{"group1"}, []ListResult{ListResult{"group1", "desc1", []Repo{Repo{"repo1", "path1", []common.Remote{}}}}}},
+		{[]string{"group1"}, []ListResult{ListResult{"group1", "desc1", []Repo{{"repo1", "path1", []common.Remote{}}}}}},
 		{[]string{"group2"}, []ListResult{ListResult{"group2", "desc2", []Repo{}}}},
 	}