add "OPEN" button in the Play Store
Open the Wallpaper chooser
show toast to guide to choose our product
fix escaping

http://developer.android.com/guide/topics/resources/string-resource.html
needs individual activities in AndroidManifest.xml
replace SHARED_PREFS_NAME with getPackageName
remove useless class
avoid importing R.java; accessing res by using the name instead of ID
doesn't work
it fixes the crash???
open our developers page to list our products
use "market:" instead of "https:"