Updates functions PHPDoc with more correct return types.

Author: seanmcn

src/Kobas/APIClient/Request/Curl.php

@@ -10,7 +10,7 @@
 class Curl implements HttpRequest
 {
     /**
-     * @var null
+     * @var null|false|resource
      */
     private $handle = null;
 
@@ -28,7 +28,7 @@ public function init()
 
     /**
      * @param $url
-     * @return $this|Curl
+     * @return Curl
      */
     public function setUrl($url)
     {
@@ -38,7 +38,7 @@ public function setUrl($url)
     /**
      * @param $name
      * @param $value
-     * @return $this
+     * @return Curl
      */
     public function setOption($name, $value)
     {
@@ -48,15 +48,15 @@ public function setOption($name, $value)
 
 
     /**
-     * @return null
+     * @return false| resource
      */
     public function getHandle()
     {
         return $this->handle;
     }
 
     /**
-     * @return mixed
+     * @return bool|string
      */
     public function execute()
     {
@@ -89,7 +89,7 @@ public function getErrorMessage()
     }
 
     /**
-     * @return $this
+     * @return Curl
      */
     public function close()
     {