updater revision (#216)

Prior to this the update it would only alert the user of new versions when logged in.  this update now works more in line with other wp plugins when updates are available so that mail on update type plugins (which email when updates are available) to be used to alert users when
not logged in too.

updater.php

@@ -394,30 +394,30 @@ public function get_plugin_data() {
 	 * @return object $transient updated plugin data transient
 	 */
 	public function api_check( $transient ) {
-
-		// Check if the transient contains the 'checked' information
-		// If not, just return its value without hacking it
-		if ( empty( $transient->checked ) )
-			return $transient;
-
 		$this->init();
 
 		// check the version and decide if it's new
 		$update = version_compare( $this->config['new_version'], $this->config['version'] );
 
 		if ( 1 === $update ) {
-			$response = new stdClass;
-			$response->new_version = $this->config['new_version'];
-			$response->slug = $this->config['proper_folder_name'];
-			$response->url = $this->config['github_url'];
-			$response->package = $this->config['zip_url'];
-			$response->tested = $this->config['tested'];
-
-			// If response is false, don't alter the transient
-			if ( false !== $response )
-			{
-				$transient->response[ $this->config['slug'] ] = $response;
-				delete_site_transient(md5($this->config['slug']).'_new_changelog');
+			if ( empty( $transient->response ) ) {
+				$transient->response = array();
+			}
+
+			if (empty($transient->response[ $this->config['slug'] ])) {
+				$response = new stdClass;
+				$response->new_version = $this->config['new_version'];
+				$response->slug = $this->config['proper_folder_name'];
+				$response->url = $this->config['github_url'];
+				$response->package = $this->config['zip_url'];
+				$response->tested = $this->config['tested'];
+
+				// If response is false, don't alter the transient
+				if ( false !== $response )
+				{
+					$transient->response[ $this->config['slug'] ] = $response;
+					delete_site_transient(md5($this->config['slug']).'_new_changelog');
+				}
 			}
 		}