fix #23 Update plugin xml for ios, be careful we need test the download on wp8
fix #23 Update plugin xml for ios, be careful we need test the download on wp8

ffournier/cordova-plugin-mbtiles,ffournier/cordova-plugin-mbtiles,ffournier/cordova-plugin-mbtiles,ffournier/cordova-plugin-mbtiles,andreacimino/cordova-plugin-mbtiles,andreacimino/cordova-plugin-mbtiles,andreacimino/cordova-plugin-mbtiles,ffournier/cordova-plugin-mbtiles,andreacimino/cordova-plugin-mbtiles,andreacimino/cordova-plugin-mbtiles