Fix various code style nuances

src/Aviat/Ion/Di/Exception/ContainerException.php

@@ -5,9 +5,7 @@ namespace Aviat\Ion\Di\Exception;
 /**
  * Generic exception for Di Container
  */
-class ContainerException
-	extends \Exception
-	implements \Interop\Container\Exception\ContainerException {
+class ContainerException extends \Exception implements \Interop\Container\Exception\ContainerException {
 
 }
 // End of ContainerException.php

src/Aviat/Ion/Di/Exception/NotFoundException.php

@@ -6,9 +6,7 @@ namespace Aviat\Ion\Di\Exception;
  * Exception for Di Container when trying to access a
  * key that doesn't exist in the container
  */
-class NotFoundException
-	extends ContainerException
-	implements \Interop\Container\Exception\NotFoundException {
+class NotFoundException extends ContainerException implements \Interop\Container\Exception\NotFoundException {
 
 }
 // End of NotFoundException.php

src/Aviat/Ion/Friend.php

@@ -114,8 +114,6 @@ class Friend {
 		{
 			return NULL;
 		}
-
-		return NULL;
 	}
 }
 // End of Friend.php

src/Aviat/Ion/Type/ArrayType.php

@@ -158,7 +158,7 @@ class ArrayType {
 	/**
 	 * Return the array, or a key
 	 *
-	 * @param string|integer $key
+	 * @param string|integer|null $key
 	 * @return mixed
 	 */
 	public function &get($key = NULL)
@@ -189,6 +189,7 @@ class ArrayType {
 	public function set($key, $value)
 	{
 		$this->arr[$key] = $value;
+		return $this;
 	}
 
 	/**

src/Aviat/Ion/View/HtmlView.php

@@ -44,8 +44,6 @@ class HtmlView extends HttpView {
 	 */
 	public function render_template($path, $data)
 	{
-		$buffer = "";
-
 		$data['helper'] = $this->helper;
 		$data['escape'] = $this->helper->escape();