Use code style in example/stream as in future's

Author: kpp

examples/stream.rs

@@ -1,12 +1,13 @@
-#![type_length_limit="2111998"]
-
 use futures::executor;
 use futures_async_combinators::stream::*;
 
 fn main() {
     let stream = iter(1..=3);
     let stream = map(stream, |x| x + 1);
     let stream = map(stream, |x| x * 2);
+    let stream = inspect(stream, |x| {
+        dbg!(x);
+    });
 
     let collect_future = collect(stream);
     let collection: Vec<_> = executor::block_on(collect_future);