Fix README

README.md

@@ -161,9 +161,8 @@ use rust_i18n::t;
 Then, simply use it wherever a localized string is needed:
 
 ```rust,no_run
-# fn _rust_i18n_translate(locale: &str, key: &str) -> String { todo!() }
-# fn main() {
 use rust_i18n::t;
+
 t!("hello");
 // => "Hello world"
 
@@ -181,7 +180,6 @@ t!("messages.hello", locale = "zh-CN", name = "Jason", count = 2);
 
 t!("messages.hello", locale = "zh-CN", "name" => "Jason", "count" => 3 + 2);
 // => "你好，Jason (5)"
-# }
 ```
 
 ### Current Locale
@@ -202,16 +200,6 @@ Since v2.0.0 rust-i18n support extend backend for cusomize your translation impl
 For example, you can use HTTP API for load translations from remote server:
 
 ```rust,no_run
-# pub mod reqwest {
-#  pub mod blocking {
-#    pub struct Response;
-#    impl Response {
-#       pub fn text(&self) -> Result<String, Box<dyn std::error::Error>> { todo!() }
-#    }
-#    pub fn get(_url: &str) -> Result<Response, Box<dyn std::error::Error>> { todo!() }
-#  }
-# }
-# use std::collections::HashMap;
 use rust_i18n::Backend;
 
 pub struct RemoteI18n {
@@ -246,14 +234,6 @@ impl Backend for RemoteI18n {
 Now you can init rust_i18n by extend your own backend:
 
 ```rust,no_run
-# struct RemoteI18n;
-# impl RemoteI18n {
-#   fn new() -> Self { todo!() }
-# }
-# impl rust_i18n::Backend for RemoteI18n {
-#   fn available_locales(&self) -> Vec<&str> { todo!() }
-#   fn translate(&self, locale: &str, key: &str) -> Option<&str> { todo!() }
-# }
 rust_i18n::i18n!("locales", backend = RemoteI18n::new());
 ```