Added new keywords for Windows Phone 8

plugin.xml

@@ -7,7 +7,7 @@
     <name>LocalNotifications</name>
 
     <description>A bunch of local-notification plugins for Cordova 3.x.x</description>
-    <keywords>notification, local notification, alarm, ios, android</keywords>
+    <keywords>notification, local notification, alarm, scheduler, tile, live tiles, ios, android, windows phone 8, wp8</keywords>
     <license>GPL v2 License</license>
 
     <author>Sebastián Katzer (github.com/katzer)</author>