diff --git a/.appveyor.yml b/.appveyor.yml
index 3dd9679..39546c9 100644
--- a/.appveyor.yml
+++ b/.appveyor.yml
@@ -8,4 +8,5 @@ build_script:
 - cmd: go get -v github.com/xor-gate/debpkg/...
 - cmd: go build github.com/xor-gate/debpkg
 test_script:
+- cmd: go get github.com/stretchr/testify/assert
 - cmd: go test -v -race github.com/xor-gate/debpkg
diff --git a/.travis.yml b/.travis.yml
index 856b8f3..774a20f 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -14,6 +14,7 @@ go:
 before_install:
   - go get github.com/axw/gocov/gocov
   - go get github.com/mattn/goveralls
+  - go get github.com/stretchr/testify/assert
   - if ! go get github.com/golang/tools/cmd/cover; then go get golang.org/x/tools/cmd/cover; fi
 
 script:
diff --git a/AUTHORS b/AUTHORS
new file mode 100644
index 0000000..7faa06d
--- /dev/null
+++ b/AUTHORS
@@ -0,0 +1,2 @@
+Jerry Jacobs (@xor-gate)
+Rik van der Heijden (@rikvdh)
\ No newline at end of file
diff --git a/LICENSE b/LICENSE
index 17756d7..85ef505 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,6 +1,6 @@
 The MIT License (MIT)
 
-Copyright (c) 2016 Jerry Jacobs
+Copyright (c) 2016 Debpkg authors
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/README.md b/README.md
index 1f8f24b..4b9abe3 100644
--- a/README.md
+++ b/README.md
@@ -25,7 +25,6 @@ The feature list below describes the usability state of the project:
 
 - Unable to specifiy file or folder destination when adding
 
-
 ## Why this package was created
 
 This package was created due to the lack to debianize from other platforms (windows/mac/*bsd). Because
diff --git a/ar.go b/ar.go
index ffb230c..8dcda5b 100644
--- a/ar.go
+++ b/ar.go
@@ -1,13 +1,14 @@
-// Copyright 2017 Jerry Jacobs. All rights reserved.
+// Copyright 2017 Debpkg authors. All rights reserved.
 // Use of this source code is governed by the MIT
 // license that can be found in the LICENSE file.
 
 package debpkg
 
 import (
-	"time"
 	"fmt"
 	"os"
+	"time"
+
 	"github.com/blakesmith/ar"
 )
 
@@ -42,7 +43,9 @@ func (deb *DebPkg) createDebAr(filename string) error {
 		}
 	}()
 
-	deb.data.tgz.Close()
+	if err := deb.data.tgz.Close(); err != nil {
+		return fmt.Errorf("cannot close tgz writer: %v", err)
+	}
 
 	now := time.Now()
 	w := ar.NewWriter(fd)
diff --git a/config.go b/config.go
index 341fead..c0b9c3c 100644
--- a/config.go
+++ b/config.go
@@ -1,4 +1,4 @@
-// Copyright 2016 Jerry Jacobs. All rights reserved.
+// Copyright 2017 Debpkg authors. All rights reserved.
 // Use of this source code is governed by the MIT
 // license that can be found in the LICENSE file.
 
@@ -7,6 +7,7 @@ package debpkg
 import (
 	"fmt"
 	"io/ioutil"
+	"runtime"
 
 	yaml "gopkg.in/yaml.v2"
 )
@@ -18,6 +19,9 @@ type debPkgSpecFileCfg struct {
 	Maintainer      string `yaml:"maintainer"`
 	MaintainerEmail string `yaml:"maintainer_email"`
 	Homepage        string `yaml:"homepage"`
+	Section         string `yaml:"section"`
+	Priority        string `yaml:"priority"`
+	BuiltUsing      string `yaml:"built_using"`
 	Description     struct {
 		Short string `yaml:"short"`
 		Long  string `yaml:"long"`
@@ -32,18 +36,30 @@ type debPkgSpecFileCfg struct {
 
 // Config loads settings from a depkg.yml specfile
 func (deb *DebPkg) Config(filename string) error {
-	cfg := debPkgSpecFileCfg{}
+	cfg := debPkgSpecFileCfg{
+		Name:            "unknown",
+		Version:         "0.1.0+dev",
+		Architecture:    "any",
+		Maintainer:      "anonymous",
+		MaintainerEmail: "anon@foo.bar",
+		Homepage:        "https://www.google.com",
+		Section:         "misc",
+		Priority:        string(PriorityOptional),
+		BuiltUsing:      runtime.Version(),
+	}
+	cfg.Description.Long = "-"
+	cfg.Description.Short = "-"
 
 	cfgFile, err := ioutil.ReadFile(filename)
 	if err != nil {
-		return err
+		return fmt.Errorf("problem reading config file: %v", err)
 	}
-
 	err = yaml.Unmarshal(cfgFile, &cfg)
 	if err != nil {
-		return err
+		return fmt.Errorf("problem unmarshaling config file: %v", err)
 	}
-
+	deb.SetSection(cfg.Section)
+	deb.SetPriority(Priority(cfg.Priority))
 	deb.SetName(cfg.Name)
 	deb.SetVersion(cfg.Version)
 	deb.SetArchitecture(cfg.Architecture)
@@ -52,25 +68,26 @@ func (deb *DebPkg) Config(filename string) error {
 	deb.SetHomepage(cfg.Homepage)
 	deb.SetShortDescription(cfg.Description.Short)
 	deb.SetDescription(cfg.Description.Long)
+	deb.SetBuiltUsing(cfg.BuiltUsing)
 
 	for _, file := range cfg.Files {
 		err := deb.AddFile(file.Src, file.Dest)
 		if err != nil {
-			fmt.Printf("error adding file %s: %v\n", file.Src, err)
+			return fmt.Errorf("error adding file %s: %v", file.Src, err)
 		}
 	}
 
 	for _, dir := range cfg.Directories {
 		err := deb.AddDirectory(dir)
 		if err != nil {
-			fmt.Printf("error adding directory %s: %v\n", dir, err)
+			return fmt.Errorf("error adding directory %s: %v", dir, err)
 		}
 	}
 
 	for _, dir := range cfg.EmptyDirectories {
 		err := deb.AddEmptyDirectory(dir)
 		if err != nil {
-			fmt.Printf("error adding directory %s: %v\n", dir, err)
+			return fmt.Errorf("error adding directory %s: %v", dir, err)
 		}
 	}
 
diff --git a/config_test.go b/config_test.go
new file mode 100644
index 0000000..04b469c
--- /dev/null
+++ b/config_test.go
@@ -0,0 +1,80 @@
+// Copyright 2017 Debpkg authors. All rights reserved.
+// Use of this source code is governed by the MIT
+// license that can be found in the LICENSE file.
+
+package debpkg
+
+import (
+	"io/ioutil"
+	"runtime"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+// TestExampleConfig verifies if the config example in the root is correctly loaded
+func TestExampleConfig(t *testing.T) {
+	deb := New()
+
+	err := deb.Config("debpkg.yml")
+	if err != nil {
+		t.Errorf("debpkg.yml error: %v", err)
+	}
+	assert.Equal(t, "7.6.5", deb.control.info.version.full,
+		"Unexpected deb.control.info.version.full")
+	assert.Equal(t, "Foo Bar", deb.control.info.maintainer,
+		"Unexpected deb.control.info.maintainer")
+	assert.Equal(t, "foo@bar.com", deb.control.info.maintainerEmail,
+		"Unexpected deb.control.info.maintainerEmail")
+	assert.Equal(t, "https://github.com/xor-gate/debpkg", deb.control.info.homepage,
+		"Unexpected deb.control.info.homepage")
+	assert.Equal(t, "This is a short description", deb.control.info.descrShort,
+		"Unexpected short description")
+	assert.Equal(t, "golang", deb.control.info.builtUsing,
+		"unexpected built using")
+	assert.Equal(t, "devel", deb.control.info.section,
+		"unexpected section")
+	assert.Equal(t, PriorityStandard, deb.control.info.priority,
+		"unexpected priority")
+}
+
+func TestDefaultConfig(t *testing.T) {
+	f, err := ioutil.TempFile("", "config")
+	if err != nil {
+		t.Errorf("unexpected error creating tempfile: %v", err)
+	}
+	f.Close()
+	deb := New()
+	if err := deb.Config(f.Name()); err != nil {
+		t.Errorf("Unexpected error during load of empty config: %v", err)
+	}
+	assert.Equal(t, "any", deb.control.info.architecture,
+		"unexpected architecture")
+	assert.Equal(t, "anonymous", deb.control.info.maintainer,
+		"unexpected maintainer")
+	assert.Equal(t, "anon@foo.bar", deb.control.info.maintainerEmail,
+		"unexpected maintainer email")
+	assert.Equal(t, "https://www.google.com", deb.control.info.homepage,
+		"unexpected homepage")
+	assert.Equal(t, PriorityOptional, deb.control.info.priority,
+		"unexpected priority")
+	assert.Equal(t, "0.1.0+dev", deb.control.info.version.full,
+		"unexpected version")
+	assert.Equal(t, "misc", deb.control.info.section,
+		"unexpected section")
+	assert.Equal(t, "unknown", deb.control.info.name,
+		"unexpected name")
+	assert.Equal(t, runtime.Version(), deb.control.info.builtUsing,
+		"unexpected built using")
+	assert.Equal(t, "-", deb.control.info.descrShort,
+		"unexpected short description")
+	assert.Equal(t, " -", deb.control.info.descr,
+		"unexpected long description")
+}
+
+func TestNonExistingConfig(t *testing.T) {
+	deb := New()
+
+	err := deb.Config("/non/existant/config/file")
+	assert.Error(t, err, "error expected")
+}
diff --git a/constants.go b/constants.go
index 305e418..bb8b1aa 100644
--- a/constants.go
+++ b/constants.go
@@ -1,3 +1,7 @@
+// Copyright 2017 Debpkg authors. All rights reserved.
+// Use of this source code is governed by the MIT
+// license that can be found in the LICENSE file.
+
 package debpkg
 
 // Priority for Debian package
diff --git a/control.go b/control.go
index 0c9d31e..a9e92a3 100644
--- a/control.go
+++ b/control.go
@@ -1,21 +1,22 @@
-// Copyright 2017 Jerry Jacobs. All rights reserved.
+// Copyright 2017 Debpkg authors. All rights reserved.
 // Use of this source code is governed by the MIT
 // license that can be found in the LICENSE file.
 
 package debpkg
 
 import (
-	"strings"
 	"bytes"
 	"fmt"
+	"strings"
+
 	"github.com/xor-gate/debpkg/lib/targzip"
 )
 
 type debPkgControl struct {
-	buf   *bytes.Buffer
-	tgz   *targzip.TarGzip
-	info  debPkgControlInfo
-	extra []string // Extra files added to the control.tar.gz. Typical usage is for conffiles, postinst, postrm, prerm.
+	buf       *bytes.Buffer
+	tgz       *targzip.TarGzip
+	info      debPkgControlInfo
+	extra     []string // Extra files added to the control.tar.gz. Typical usage is for conffiles, postinst, postrm, prerm.
 	conffiles []string // Conffiles which must be treated as configuration files
 }
 
diff --git a/control_test.go b/control_test.go
index 1ff5d81..ef48225 100644
--- a/control_test.go
+++ b/control_test.go
@@ -1,4 +1,4 @@
-// Copyright 2017 Jerry Jacobs. All rights reserved.
+// Copyright 2017 Debpkg authors. All rights reserved.
 // Use of this source code is governed by the MIT
 // license that can be found in the LICENSE file.
 
diff --git a/data.go b/data.go
index 32af67c..ea7a653 100644
--- a/data.go
+++ b/data.go
@@ -1,16 +1,17 @@
-// Copyright 2017 Jerry Jacobs. All rights reserved.
+// Copyright 2017 Debpkg authors. All rights reserved.
 // Use of this source code is governed by the MIT
 // license that can be found in the LICENSE file.
 
 package debpkg
 
 import (
-	"io"
+	"bytes"
+	"crypto/md5"
 	"fmt"
+	"io"
 	"os"
-	"crypto/md5"
-	"bytes"
 	"strings"
+
 	"github.com/xor-gate/debpkg/lib/targzip"
 )
 
@@ -28,13 +29,10 @@ func (d *debPkgData) addDirectory(dirpath string) error {
 			return nil
 		}
 	}
-
 	if err := d.tgz.AddDirectory(dirpath); err != nil {
 		return err
 	}
-
 	d.dirs = append(d.dirs, dirpath)
-
 	return nil
 }
 
@@ -72,7 +70,10 @@ func (d *debPkgData) addFile(filename string, dest ...string) error {
 		return err
 	}
 
-	md5, _ := computeMd5(fd)
+	md5, err := computeMd5(fd)
+	if err != nil {
+		return err
+	}
 	d.size += stat.Size() / 1024
 	d.md5sums += fmt.Sprintf("%x  %s\n", md5, filename)
 
diff --git a/debpkg.go b/debpkg.go
index 6490cae..7a65e49 100644
--- a/debpkg.go
+++ b/debpkg.go
@@ -1,4 +1,4 @@
-// Copyright 2017 Jerry Jacobs. All rights reserved.
+// Copyright 2017 Debpkg authors. All rights reserved.
 // Use of this source code is governed by the MIT
 // license that can be found in the LICENSE file.
 
@@ -11,6 +11,7 @@ import (
 	"os"
 	"path/filepath"
 	"time"
+
 	"github.com/xor-gate/debpkg/lib/targzip"
 
 	"golang.org/x/crypto/openpgp"
@@ -20,10 +21,10 @@ import (
 
 // DebPkg holds data for a single debian package
 type DebPkg struct {
-	debianBinary     string
-	control          debPkgControl
-	data             debPkgData
-	digest           debPkgDigest
+	debianBinary string
+	control      debPkgControl
+	data         debPkgData
+	digest       debPkgDigest
 }
 
 // New creates new debian package
@@ -99,7 +100,7 @@ func (deb *DebPkg) WriteSigned(filename string, entity *openpgp.Entity, keyid st
 		signer = id
 	}
 
-	deb.digest.date = fmt.Sprintf(time.Now().Format(time.ANSIC))
+	deb.digest.date = time.Now().Format(time.ANSIC)
 	deb.digest.signer = signer
 
 	clearsign, err := clearsign.Encode(&buf, entity.PrivateKey, &cfg)
@@ -129,7 +130,7 @@ func (deb *DebPkg) WriteSigned(filename string, entity *openpgp.Entity, keyid st
 
 // AddFile adds a file by filename to the package
 func (deb *DebPkg) AddFile(filename string, dest ...string) error {
-	return deb.data.addFile(filename, dest ...)
+	return deb.data.addFile(filename, dest...)
 }
 
 // AddEmptyDirectory adds a empty directory to the package
@@ -139,21 +140,23 @@ func (deb *DebPkg) AddEmptyDirectory(dir string) error {
 
 // AddDirectory adds a directory to the package
 func (deb *DebPkg) AddDirectory(dir string) error {
+	deb.data.addDirectory(dir)
+
 	return filepath.Walk(dir, func(path string, f os.FileInfo, err error) error {
 		if err != nil {
 			return err
 		}
-
-		if path == "." || path == ".." {
+		if path == "." || path == ".." || dir == path {
 			return nil
 		}
-
-		err = deb.AddFile(path)
-		if err != nil {
-			return err
+		if f.IsDir() {
+			if err := deb.data.addDirectory(path); err != nil {
+				return err
+			}
+			return deb.AddDirectory(path)
 		}
 
-		return nil
+		return deb.AddFile(path)
 	})
 }
 
diff --git a/debpkg.yml b/debpkg.yml
index ea9584c..09e030f 100644
--- a/debpkg.yml
+++ b/debpkg.yml
@@ -1,5 +1,5 @@
 ##
-# Copyright 2017 Jerry Jacobs. All rights reserved.
+# Copyright 2017 Debpkg authors. All rights reserved.
 # Use of this source code is governed by the MIT
 # license that can be found in the LICENSE file.
 #
@@ -11,6 +11,9 @@ architecture: all
 maintainer: Foo Bar
 maintainer_email: foo@bar.com
 homepage: https://github.com/xor-gate/debpkg
+section: devel
+priority: standard
+built_using: golang
 description:
    short: This is a short description
    long: >
@@ -25,5 +28,7 @@ files:
   - file: cmd/debpkg/main.go
     dest: /tmp/main.go
   - file: README.md
+directories:
+  - vendor
 emptydirs:
   - /tmp/bogus/directory
\ No newline at end of file
diff --git a/debpkg_test.go b/debpkg_test.go
index d892d4c..a25473c 100644
--- a/debpkg_test.go
+++ b/debpkg_test.go
@@ -1,4 +1,4 @@
-// Copyright 2017 Jerry Jacobs. All rights reserved.
+// Copyright 2017 Debpkg authors. All rights reserved.
 // Use of this source code is governed by the MIT
 // license that can be found in the LICENSE file.
 
@@ -8,8 +8,9 @@ import (
 	"fmt"
 	"os/exec"
 	"path/filepath"
-	"golang.org/x/crypto/openpgp"
 	"testing"
+
+	"golang.org/x/crypto/openpgp"
 )
 
 var e *openpgp.Entity
@@ -19,42 +20,6 @@ func init() {
 	e, _ = openpgp.NewEntity("Foo Bar", "", "foo@bar.com", nil)
 }
 
-// TestConfig verifies the specfile is correctly loaded
-func TestConfig(t *testing.T) {
-	deb := New()
-
-	err := deb.Config("debpkg.yml")
-	if err != nil {
-		t.Errorf("Unable to open debpkg.yml in CWD: %v", err)
-		return
-	}
-
-	if deb.control.info.version.full != "7.6.5" {
-		t.Errorf("Unexpected deb.control.info.version.full: %s", deb.control.info.version.full)
-		return
-	}
-
-	if deb.control.info.maintainer != "Foo Bar" {
-		t.Errorf("Unexpected deb.control.info.maintainer: %s", deb.control.info.maintainer)
-		return
-	}
-
-	if deb.control.info.maintainerEmail != "foo@bar.com" {
-		t.Errorf("Unexpected deb.control.info.maintainerEmail: %s", deb.control.info.maintainerEmail)
-		return
-	}
-
-	if deb.control.info.homepage != "https://github.com/xor-gate/debpkg" {
-		t.Errorf("Unexpected deb.control.info.homepage: %s", deb.control.info.homepage)
-		return
-	}
-
-	if deb.control.info.descrShort != "This is a short description" {
-		t.Error("Unexpected short description")
-		return
-	}
-}
-
 // Test creation of empty digest
 func TestDigestCreateEmpty(t *testing.T) {
 	// FIXME it seems whe digesting the data buf the whole tarball will go corrupt...
@@ -201,11 +166,7 @@ func ExampleWrite() {
 }
 
 func dpkg(cmd, action, filename string) error {
-	args := []string{"--"+action, filename}
-	if err := exec.Command(cmd, args...).Run(); err != nil {
-		return err
-	}
-	return nil
+	return exec.Command(cmd, "--"+action, filename).Run()
 }
 
 func TestReadWithNativeDpkg(t *testing.T) {
@@ -216,6 +177,9 @@ func TestReadWithNativeDpkg(t *testing.T) {
 	}
 
 	debs, err := filepath.Glob("*.deb")
+	if err != nil {
+		t.Errorf("Unexpected error on glob: %v", err)
+	}
 	for _, deb := range debs {
 		err = dpkg(dpkgCmd, "info", deb)
 		if err != nil {
diff --git a/digest.go b/digest.go
index d626784..71e4f7f 100644
--- a/digest.go
+++ b/digest.go
@@ -1,17 +1,17 @@
-// Copyright 2017 Jerry Jacobs. All rights reserved.
+// Copyright 2017 Debpkg authors. All rights reserved.
 // Use of this source code is governed by the MIT
 // license that can be found in the LICENSE file.
 
 package debpkg
 
 import (
-	"io"
-	"fmt"
 	"bytes"
-	"hash"
 	"crypto"
 	"crypto/md5"
 	"crypto/sha1"
+	"fmt"
+	"hash"
+	"io"
 )
 
 const debPkgDigestDefaultHash = crypto.SHA1
diff --git a/doc.go b/doc.go
index 47b15d3..3c9606e 100644
--- a/doc.go
+++ b/doc.go
@@ -1,4 +1,4 @@
-// Copyright 2016 Jerry Jacobs. All rights reserved.
+// Copyright 2017 Debpkg authors. All rights reserved.
 // Use of this source code is governed by the MIT
 // license that can be found in the LICENSE file.
 
diff --git a/lib/targzip/targz.go b/lib/targzip/targz.go
index 32245d1..9f00a15 100644
--- a/lib/targzip/targz.go
+++ b/lib/targzip/targz.go
@@ -1,20 +1,21 @@
-// Copyright 2017 Jerry Jacobs. All rights reserved.
+// Copyright 2017 Debpkg authors. All rights reserved.
 // Use of this source code is governed by the MIT
 // license that can be found in the LICENSE file.
 
 package targzip
 
 import (
-	"os"
-	"io"
-	"fmt"
-	"time"
-	"strings"
 	"archive/tar"
-	"path/filepath"
 	"compress/gzip"
+	"fmt"
+	"io"
+	"os"
+	"path/filepath"
+	"strings"
+	"time"
 )
 
+// TarGzip is a combined writer for .tar.gz-alike files
 type TarGzip struct {
 	tw *tar.Writer
 	gw *gzip.Writer
@@ -113,11 +114,9 @@ func (t *TarGzip) AddDirectory(dirpath string) error {
 		ModTime:  time.Now(),
 		Size:     0,
 	}
-
 	if err := t.WriteHeader(hdr); err != nil {
 		return fmt.Errorf("tar-header for dir: %v", err)
 	}
-
 	return nil
 }