Better name for forked processes

examples/fork.php

@@ -2,12 +2,12 @@
 <?php
 require dirname(__DIR__).'/vendor/autoload.php';
 
-use Icicle\Concurrent\Forking\Process;
+use Icicle\Concurrent\Forking\Fork;
 use Icicle\Coroutine;
 use Icicle\Loop;
 
 Coroutine\create(function () {
-    $context = Process::spawn(function () {
+    $context = Fork::spawn(function () {
         print "Child sleeping for 4 seconds...\n";
         sleep(4);
 

examples/thread.php

@@ -13,8 +13,10 @@ $timer = Loop\periodic(1, function () {
 });
 
 Coroutine\create(function () {
+    $foo = 1;
+
     // Create a new child thread that does some blocking stuff.
-    $context = Thread::spawn(function () {
+    $context = Thread::spawn(function () use ($foo) {
         printf("\$this: %s\n", get_class($this));
 
         printf("Received the following from parent: %s\n", (yield $this->receive()));

src/Forking/Fork.php

@@ -16,7 +16,7 @@ use Icicle\Loop;
 /**
  * Implements a UNIX-compatible context using forked processes.
  */
-class Process implements ContextChannelInterface
+class Fork implements ContextChannelInterface
 {
     /**
      * @var \Icicle\Concurrent\Sync\Channel A channel for communicating with the child.