Added shortcode support

Started with Devin's code from DevinVinson#262 (comment)

plugin-name/includes/class-plugin-name-loader.php

@@ -50,6 +50,7 @@ public function __construct() {
 
 		$this->actions = array();
 		$this->filters = array();
+		$this->shortcodes = array();
 
 	}
 
@@ -81,6 +82,18 @@ public function add_filter( $hook, $component, $callback, $priority = 10, $accep
 		$this->filters = $this->add( $this->filters, $hook, $component, $callback, $priority, $accepted_args );
 	}
 
+    	/**
+     	 * Add a new shortcode to the collection to be registered with WordPress
+     	 *
+     	 * @since     1.0.0
+     	 * @param     string        $tag           The name of the new shortcode.
+     	 * @param     object        $component      A reference to the instance of the object on which the shortcode is defined.
+     	 * @param     string        $callback       The name of the function that defines the shortcode.
+     	 */
+        public function add_shortcode( $tag, $component, $callback) {
+        	$this->shortcodes = $this->add( $this->shortcodes, $tag, $component, $callback);
+	}
+
 	/**
 	 * A utility function that is used to register the actions and hooks into a single
 	 * collection.
@@ -95,7 +108,7 @@ public function add_filter( $hook, $component, $callback, $priority = 10, $accep
 	 * @param    int                  $accepted_args    The number of arguments that should be passed to the $callback.
 	 * @return   array                                  The collection of actions and filters registered with WordPress.
 	 */
-	private function add( $hooks, $hook, $component, $callback, $priority, $accepted_args ) {
+	private function add( $hooks, $hook, $component, $callback, $priority = 10, $accepted_args = 2 ) {
 
 		$hooks[] = array(
 			'hook'          => $hook,
@@ -124,6 +137,11 @@ public function run() {
 			add_action( $hook['hook'], array( $hook['component'], $hook['callback'] ), $hook['priority'], $hook['accepted_args'] );
 		}
 
+		foreach ( $this->shortcodes as $hook ) {
+            		add_shortcode( $hook['hook'], array( $hook['component'], $hook['callback'] ) );
+
+        }
+
 	}
 
 }