Draft of the init command

config/config.go

@@ -104,3 +104,16 @@ func Load(file string) (config Project, err error) {
 	err = yaml.Unmarshal(data, &config)
 	return
 }
+
+// DefaultConfig returns a default configuration for the init command
+func DefaultConfig() string {
+	return `
+build:
+  binary: drum-roll
+  goos:
+    - windows
+    - darwin
+    - linux
+  goarch:
+    - amd64`
+}

config/config_test.go

@@ -0,0 +1,16 @@
+package config
+
+import (
+	"testing"
+
+	yaml "gopkg.in/yaml.v1"
+)
+
+func TestDefaultConfig(t *testing.T) {
+	cfg := DefaultConfig()
+	config := Project{}
+
+	if err := yaml.Unmarshal([]byte(cfg), &config); err != nil {
+		t.Errorf("Not a valid config. %s", err.Error())
+	}
+}

goreleaserlib/goreleaser.go

@@ -5,6 +5,8 @@ import (
 	"log"
 	"os"
 
+	"fmt"
+
 	"github.com/goreleaser/goreleaser/config"
 	"github.com/goreleaser/goreleaser/context"
 	"github.com/goreleaser/goreleaser/pipeline"
@@ -77,3 +79,17 @@ func Release(flags Flags) error {
 	log.Println("Done!")
 	return nil
 }
+
+// InitProject creates an example goreleaser.yml in the current directory
+func InitProject() error {
+	filename := "goreleaser.yml"
+	if _, err := os.Stat(filename); !os.IsNotExist(err) {
+		if err != nil {
+			return err
+		}
+
+		return fmt.Errorf("%s already exists", filename)
+	}
+
+	return ioutil.WriteFile(filename, []byte(config.DefaultConfig()), 0644)
+}

main.go

@@ -46,6 +46,22 @@ func main() {
 		}
 		return nil
 	}
+	app.Commands = []cli.Command{
+		{
+			Name:    "init",
+			Aliases: []string{"i"},
+			Usage:   "generate goreleaser.yml",
+			Action: func(c *cli.Context) error {
+				err := goreleaserlib.InitProject()
+				if err != nil {
+					return err
+				}
+
+				log.Printf("goreleaser.yml created. Please edit accordingly to your needs.")
+				return nil
+			},
+		},
+	}
 	if err := app.Run(os.Args); err != nil {
 		log.Fatalln(err)
 	}