vendor dependencies with dep

vendor/github.com/go-pg/migrations/example/2_add_id.go

@@ -0,0 +1,19 @@
+package main
+
+import (
+	"fmt"
+
+	"github.com/go-pg/migrations"
+)
+
+func init() {
+	migrations.Register(func(db migrations.DB) error {
+		fmt.Println("adding id column...")
+		_, err := db.Exec(`ALTER TABLE my_table ADD id serial`)
+		return err
+	}, func(db migrations.DB) error {
+		fmt.Println("dropping id column...")
+		_, err := db.Exec(`ALTER TABLE my_table DROP id`)
+		return err
+	})
+}