Add RenderData interface

This allows Go plugins to easily inject global data.

1 files changed, 1 insertions, 1 deletions

diff --git a/plugin.go b/plugin.go
index 46fd1a7..6d5b730 100644
--- a/plugin.go
+++ b/plugin.go
@@ -18,7 +18,7 @@ type Plugin interface {
 	SetRoutes(group *echo.Group)
 	// Inject is called prior to rendering a template. It can extend the
 	// template data by setting new items in the Extra map.
-	Inject(name string, data interface{}) error
+	Inject(name string, data RenderData) error
 	// Close is called when the plugin is unloaded.
 	Close() error
 }