Add uses-feature for play store targeting.

Change-Id: I97613053ed3fd841e007a3d162351371ab9226de

AndroidManifest.xml

@@ -19,6 +19,8 @@
 
     <uses-permission android:name="android.permission.INTERNET" />
 
+    <uses-feature android:name="org.cyanogenmod.weather" android:required="true" />
+
     <application
             android:label="@string/app_name" android:allowBackup="true">
         <service