Merge pull request #9 from TheFox/example-fix

Example fix

README.md

@@ -9,22 +9,26 @@ http://github.com/liip/LiipProcessManager.git
 
 Here is a simple example
 
-    use Liip\ProcessManager\ProcessManager;
-
-    // run a process in the back ground
-    $processManager = new ProcessManager();
-    $pid = $processManager->execProcess('sleep 10m');
-    $processManager->isProcessRunning($pid)
-    $processManager->killProcess($pid);
-
-    // to set log location instead of routing it to /dev/null by default
-    $processManager = new ProcessManager('/path/to/logfile');
-    $pid = $processManager->execProcess('sleep 10m');
-
-    // acquire a lock via a pid file
-    $lock = new PidFile(new ProcessManager(), '/tmp/foobar');
-    $lock->acquireLock();
-    $pid = $lock->execProcess('sleep 10m');
-    // set the PID which should be locked on
-    $lock->setPid(getmypid());
-    $lock->releaseLock();
+```php
+<?php
+use Liip\ProcessManager\ProcessManager;
+use Liip\ProcessManager\PidFile;
+
+// run a process in the back ground
+$processManager = new ProcessManager();
+$pid = $processManager->execProcess('sleep 10m');
+$processManager->isProcessRunning($pid)
+$processManager->killProcess($pid);
+
+// to set log location instead of routing it to /dev/null by default
+$processManager = new ProcessManager('/path/to/logfile');
+$pid = $processManager->execProcess('sleep 10m');
+
+// acquire a lock via a pid file
+$lock = new PidFile(new ProcessManager(), '/tmp/foobar');
+$lock->acquireLock();
+$pid = $lock->execProcess('sleep 10m');
+// set the PID which should be locked on
+$lock->setPid(getmypid());
+$lock->releaseLock();
+```