Update vendor

vendor/github.com/GeertJohan/go.rice/http.go

@@ -0,0 +1,21 @@
+package rice
+
+import (
+	"net/http"
+)
+
+// HTTPBox implements http.FileSystem which allows the use of Box with a http.FileServer.
+//   e.g.: http.Handle("/", http.FileServer(rice.MustFindBox("http-files").HTTPBox()))
+type HTTPBox struct {
+	*Box
+}
+
+// HTTPBox creates a new HTTPBox from an existing Box
+func (b *Box) HTTPBox() *HTTPBox {
+	return &HTTPBox{b}
+}
+
+// Open returns a File using the http.File interface
+func (hb *HTTPBox) Open(name string) (http.File, error) {
+	return hb.Box.Open(name)
+}