vendor dependencies with dep

vendor/github.com/vanng822/go-premailer/premailer/main_test.go

@@ -0,0 +1,16 @@
+package premailer
+
+import (
+	"fmt"
+	"os"
+	"testing"
+)
+
+func TestMain(m *testing.M) {
+	fmt.Println("Test starting")
+	args := os.Args[:]
+	retCode := m.Run()
+	os.Args = args
+	fmt.Println("Test ending")
+	os.Exit(retCode)
+}