Grand test fixup (#138)

* start fixing up tests

* fix up tests + automate with drone

* fiddle with linting

* messing about with drone.yml

* some more fiddling

* hmmm

* add cache

* add vendor directory

* verbose

* ci updates

* update some little things

* update sig

vendor/github.com/gin-gonic/gin/render/protobuf.go

@@ -0,0 +1,36 @@
+// Copyright 2018 Gin Core Team.  All rights reserved.
+// Use of this source code is governed by a MIT style
+// license that can be found in the LICENSE file.
+
+package render
+
+import (
+	"net/http"
+
+	"github.com/golang/protobuf/proto"
+)
+
+// ProtoBuf contains the given interface object.
+type ProtoBuf struct {
+	Data interface{}
+}
+
+var protobufContentType = []string{"application/x-protobuf"}
+
+// Render (ProtoBuf) marshals the given interface object and writes data with custom ContentType.
+func (r ProtoBuf) Render(w http.ResponseWriter) error {
+	r.WriteContentType(w)
+
+	bytes, err := proto.Marshal(r.Data.(proto.Message))
+	if err != nil {
+		return err
+	}
+
+	_, err = w.Write(bytes)
+	return err
+}
+
+// WriteContentType (ProtoBuf) writes ProtoBuf ContentType.
+func (r ProtoBuf) WriteContentType(w http.ResponseWriter) {
+	writeContentType(w, protobufContentType)
+}