Update import paths from github.com/go-gitea to code.gitea.io (#135)

- Update import paths from github.com/go-gitea to code.gitea.io
- Fix import path for travis

See https://docs.travis-ci.com/user/languages/go#Go-Import-Path

vendor/code.gitea.io/go-sdk/gitea/org_team.go

@@ -0,0 +1,18 @@
+// Copyright 2016 The Gogs Authors. All rights reserved.
+// Use of this source code is governed by a MIT-style
+// license that can be found in the LICENSE file.
+
+package gitea
+
+type Team struct {
+	ID          int64  `json:"id"`
+	Name        string `json:"name"`
+	Description string `json:"description"`
+	Permission  string `json:"permission"`
+}
+
+type CreateTeamOption struct {
+	Name        string `json:"name" binding:"Required;AlphaDashDot;MaxSize(30)"`
+	Description string `json:"description" binding:"MaxSize(255)"`
+	Permission  string `json:"permission"`
+}