Merged in feature/from-pantheon (pull request #16)

code from pantheon

* code from pantheon

wp/wp-content/plugins/woocommerce/includes/legacy/api/v2/interface-wc-api-handler.php

@@ -0,0 +1,47 @@
+<?php
+/**
+ * WooCommerce API
+ *
+ * Defines an interface that API request/response handlers should implement
+ *
+ * @author      WooThemes
+ * @category    API
+ * @package     WooCommerce\RestApi
+ * @since       2.1
+ */
+
+if ( ! defined( 'ABSPATH' ) ) {
+	exit; // Exit if accessed directly
+}
+
+interface WC_API_Handler {
+
+	/**
+	 * Get the content type for the response
+	 *
+	 * This should return the proper HTTP content-type for the response
+	 *
+	 * @since 2.1
+	 * @return string
+	 */
+	public function get_content_type();
+
+	/**
+	 * Parse the raw request body entity into an array
+	 *
+	 * @since 2.1
+	 * @param string $data
+	 * @return array
+	 */
+	public function parse_body( $data );
+
+	/**
+	 * Generate a response from an array of data
+	 *
+	 * @since 2.1
+	 * @param array $data
+	 * @return string
+	 */
+	public function generate_response( $data );
+
+}