Fix typo, missing hook-in

EProcess/Adapter/ChildProcess.php

@@ -4,7 +4,7 @@
 
 use EProcess\Behaviour\UniversalSerializer;
 use EProcess\MessengerFactory;
-
+use EProcess\Stream\FullDrainStream;
 use React\ChildProcess\Process;
 use Symfony\Component\Process\PhpExecutableFinder;
 
@@ -69,8 +69,12 @@ public function create($class, array $data = [])
 
         $this->process = new Process($php);
         $this->process->start($this->loop, 0.1);
-
-        $this->process->stdin->resume();
+
+        $this->process->stdin = new FullDrainStream(
+            $this->process->stdin->stream,
+            $this->loop
+        );
+
         $this->process->stdin->write($script);
 
         $this->process->stdin->on('full-drain', function() {

EProcess/Stream/FullDrainStream.php

@@ -0,0 +1,18 @@
+<?php
+
+namespace EProcess\Stream;
+
+use React\Stream\Stream;
+use React\EventLoop\LoopInterface;
+
+class FullDrainStream extends Stream
+{
+    public function __construct($stream, LoopInterface $loop)
+    {
+        parent::__construct($stream, $loop);
+
+        $this->buffer->on('full-drain', function () {
+            $this->emit('full-drain', array($this));
+        });
+    }
+}