Merge pull request #97 from moka-rs/fix-async-doc

Fix the examples in the docs: Replace futures crate with futures-util crate

README.md

@@ -195,7 +195,7 @@ Here is a similar program to the previous example, but using asynchronous cache
 // [dependencies]
 // moka = { version = "0.7", features = ["future"] }
 // tokio = { version = "1", features = ["rt-multi-thread", "macros" ] }
-// futures = "0.3"
+// futures-util = "0.3"
 
 // Use the asynchronous cache.
 use moka::future::Cache;
@@ -240,7 +240,7 @@ async fn main() {
         .collect();
 
     // Wait for all tasks to complete.
-    futures::future::join_all(tasks).await;
+    futures_util::future::join_all(tasks).await;
 
     // Verify the result.
     for key in 0..(NUM_TASKS * NUM_KEYS_PER_TASK) {

src/future/cache.rs

@@ -61,7 +61,7 @@ use std::{
 /// // [dependencies]
 /// // moka = { version = "0.7", features = ["future"] }
 /// // tokio = { version = "1", features = ["rt-multi-thread", "macros" ] }
-/// // futures = "0.3"
+/// // futures-util = "0.3"
 ///
 /// use moka::future::Cache;
 ///
@@ -146,7 +146,7 @@ use std::{
 /// // [dependencies]
 /// // moka = { version = "0.7", features = ["future"] }
 /// // tokio = { version = "1", features = ["rt-multi-thread", "macros" ] }
-/// // futures = "0.3"
+/// // futures-util = "0.3"
 ///
 /// use std::convert::TryInto;
 /// use moka::future::Cache;
@@ -208,7 +208,7 @@ use std::{
 /// // [dependencies]
 /// // moka = { version = "0.7", features = ["future"] }
 /// // tokio = { version = "1", features = ["rt-multi-thread", "macros" ] }
-/// // futures = "0.3"
+/// // futures-util = "0.3"
 ///
 /// use moka::future::Cache;
 /// use std::time::Duration;
@@ -395,7 +395,7 @@ where
     /// //
     /// // [dependencies]
     /// // moka = { version = "0.7", features = ["future"] }
-    /// // futures = "0.3"
+    /// // futures-util = "0.3"
     /// // tokio = { version = "1", features = ["rt-multi-thread", "macros" ] }
     /// use moka::future::Cache;
     /// use std::sync::Arc;
@@ -486,7 +486,7 @@ where
     /// //
     /// // [dependencies]
     /// // moka = { version = "0.7", features = ["future"] }
-    /// // futures = "0.3"
+    /// // futures-util = "0.3"
     /// // reqwest = "0.11"
     /// // tokio = { version = "1", features = ["rt-multi-thread", "macros" ] }
     /// use moka::future::Cache;