Closes #364

Signed-off-by: Vishal Rana <vr@labstack.com>

router.go

@@ -54,7 +54,7 @@ func NewRouter(e *Echo) *Router {
 func (r *Router) Add(method, path string, h HandlerFunc, e *Echo) {
 	// Validate path
 	if path == "" {
-		e.logger.Fatal("path cannot be empty")
+		panic("echo: path cannot be empty")
 	}
 	if path[0] != '/' {
 		path = "/" + path