Linting and optimizing struct memory signature. (#1184)

* fix cleanPath spell (#969)

* linter and optimize structs

binding/form_mapping.go

@@ -179,12 +179,3 @@ func setTimeField(val string, structField reflect.StructField, value reflect.Val
 	value.Set(reflect.ValueOf(t))
 	return nil
 }
-
-// Don't pass in pointers to bind to. Can lead to bugs. See:
-// https://github.com/codegangsta/martini-contrib/issues/40
-// https://github.com/codegangsta/martini-contrib/pull/34#issuecomment-29683659
-func ensureNotPointer(obj interface{}) {
-	if reflect.TypeOf(obj).Kind() == reflect.Ptr {
-		panic("Pointers are not accepted as binding models")
-	}
-}