add cache version require

cmd/web.go

@@ -77,6 +77,7 @@ func checkVersion() {
 	checkers := []VerChecker{
 		{"github.com/Unknwon/macaron", macaron.Version, "0.4.9"},
 		{"github.com/macaron-contrib/binding", binding.Version, "0.0.4"},
+		{"github.com/macaron-contrib/cache", cache.Version, "0.0.2"},
 		{"github.com/macaron-contrib/csrf", csrf.Version, "0.0.1"},
 		{"github.com/macaron-contrib/i18n", i18n.Version, "0.0.5"},
 		{"github.com/macaron-contrib/session", session.Version, "0.1.1"},