func (ctx *Context) SetParams(name, val string) {
	if name != "*" && !strings.HasPrefix(name, ":") {
		name = ":" + name
	}
	ctx.params[name] = val
}
func (ctx *Context) SetParams(name, val string) {
	if name != "*" && !strings.HasPrefix(name, ":") {
		name = ":" + name
	}
	ctx.params[name] = val
}
// SetParams sets value of param with given name.