Make ResponseBuilderExt not target-dependent

src/lib.rs

@@ -226,9 +226,11 @@ pub use url::Url;
 #[macro_use]
 mod error;
 mod into_url;
+mod response;
 
 pub use self::error::{Error, Result};
 pub use self::into_url::IntoUrl;
+pub use self::response::ResponseBuilderExt;
 
 /// Shortcut method to quickly make a `GET` request.
 ///
@@ -294,7 +296,7 @@ if_hyper! {
     doctest!("../README.md");
 
     pub use self::async_impl::{
-        Body, Client, ClientBuilder, Request, RequestBuilder, Response, ResponseBuilderExt,
+        Body, Client, ClientBuilder, Request, RequestBuilder, Response,
     };
     pub use self::proxy::Proxy;
     #[cfg(feature = "__tls")]