diff -r 519be52bfced -r abf0f5e40281 login.go
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/login.go	Wed Apr 12 17:36:27 2017 +0200
@@ -0,0 +1,59 @@
+package gondole
+
+import (
+	"encoding/json"
+	"fmt"
+
+	"github.com/sendgrid/rest"
+)
+
+type UserToken struct {
+	Access_token string `json:"access_token"`
+	CreatedAt    int    `json:"created_at"`
+	Scope        string `json:"scope"`
+	TokenType    string `json:"token_type"`
+}
+
+func (g *Client) Login(username, password string) error {
+	if username == "" {
+		return fmt.Errorf("missing username")
+	}
+	if password == "" {
+		return fmt.Errorf("missing password")
+	}
+
+	hdrs := make(map[string]string)
+	opts := make(map[string]string)
+
+	hdrs["User-Agent"] = "Gondole/" + GondoleVersion
+	hdrs["Authorization"] = "Bearer %s" + g.Secret
+
+	opts["grant_type"] = "password"
+	opts["client_id"] = g.ID
+	opts["client_secret"] = g.Secret
+	opts["username"] = username
+	opts["password"] = password
+
+	req := rest.Request{
+		BaseURL:     g.InstanceURL + "/oauth/token",
+		Headers:     hdrs,
+		QueryParams: opts,
+		Method:      rest.Post,
+	}
+
+	r, err := rest.API(req)
+	if err != nil {
+		return err
+	}
+
+	var resp UserToken
+
+	println(r.Body)
+	err = json.Unmarshal([]byte(r.Body), &resp)
+	if err != nil {
+		return err
+	}
+
+	g.userToken = &resp
+	return nil
+}