Update README.md

Author: thesebas

README.md

@@ -9,25 +9,30 @@ ReactPHP async-await emulator with generator and yield
 ## Usage
 It makes possible writing
 
-    asyncRun(function ($init) {
-        $res = yield asyncFunc($init);
-        $res2 = yield all([asyncFunc($res+1), asyncFunc($res+1)]);
-        $res3 = yield race([asyncFunc($res*2), asyncFunc($res2/2)]);
-        return "wow".$init.$res.$res2.$res3;
-    }, 0.1)->then(function($result){
-        // ... $result is eq "wow".$res.$res2.$res3;
-    });
-    
+```php
+asyncRun(function ($init) {
+    $res = yield asyncFunc($init);
+    $res2 = yield all([asyncFunc($res + 1), asyncFunc($res + 1)]);
+    $res3 = yield race([asyncFunc($res * 2), asyncFunc($res2 / 2)]);
+    return "wow" . $init . $res . $res2 . $res3;
+}, 0.1)->then(function ($result) {
+    // ... $result is eq "wow".$res.$res2.$res3;
+});
+```    
+
 instead of
 
-    asyncFunc($init)->then(function($res){
-        return all([asyncFunc($res+1), asyncFunc($res+1)]);
-    })->then(function($res2){
-        return yield race([asyncFunc(/* $res ?? */), asyncFunc($res2/2)]);
-    })->then(function($res3){
-        return "wow"./* $init ?? */ /* $res ??*/ /* $res2 ??*/ $res3
-    })->then(function($result){
-        // $result is eq "wow".$res3
-    })
-    
+```php
+$init = 0.1;
+asyncFunc($init)->then(function ($res) {
+    return all([asyncFunc($res + 1), asyncFunc($res + 1)]);
+})->then(function ($res2) {
+    return yield race([asyncFunc(/* $res? */), asyncFunc($res2 / 2)]);
+})->then(function ($res3) {
+    return "wow" ./* $init? */ /* $res?*/ /* $res2?*/ $res3
+    })->then(function ($result) {
+    // $result is eq "wow".$res3
+});
+```
+
 For more see `spec`