Use pin-project-lite instead of pin-project (#95)

src/extract/connect_info.rs

@@ -89,7 +89,9 @@ where
     fn call(&mut self, target: T) -> Self::Future {
         let connect_info = ConnectInfo(C::connect_info(target));
         let svc = AddExtension::new(self.svc.clone(), connect_info);
-        ResponseFuture(futures_util::future::ok(svc))
+        ResponseFuture {
+            future: futures_util::future::ok(svc),
+        }
     }
 }