Merge remote-tracking branch 'kamransyed/patch-2'

Merges functionality from Xowap#26, Xowap#16, Xowap#8

Author: jessedc

src/PhpSerial.php

@@ -47,7 +47,7 @@ public function __construct()
         if (substr($sysName, 0, 5) === "Linux") {
             $this->_os = "linux";
 
-            if ($this->_exec("stty") === 0) {
+            if ($this->_exec("stty --version") === 0) {
                 register_shutdown_function(array($this, "deviceClose"));
             } else {
                 trigger_error(