Added Play Store description to strings file (for translation).

res/values/strings.xml

@@ -38,6 +38,12 @@
     <string name="ApplicationPreferenceActivity_you_need_to_have_entered_your_passphrase_before_importing_keys">You need to have entered your passphrase before importing keys...</string>
     <string name="ApplicationPreferenceActivity_you_need_to_have_entered_your_passphrase_before_managing_keys">You need to have entered your passphrase before managing keys...</string>
     <string name="ApplicationPreferenceActivity_you_havent_set_a_passphrase_yet">You haven\'t set a passphrase yet!</string>
+
+    <!-- AttachmentTypeSelectorAdapter -->
+
+    <string name="AttachmentTypeSelectorAdapter_picture">Picture</string>
+    <string name="AttachmentTypeSelectorAdapter_video">Video</string>
+    <string name="AttachmentTypeSelectorAdapter_audio">Audio</string>
     
     <!-- ConversationItem -->
     <string name="ConversationItem_message_size_d_kb">Message size: %d KB</string>
@@ -418,8 +424,7 @@
     <string name="verify_keys__menu_verified">Verified</string>
     
     <!-- EOF -->
-    <string name="AttachmentTypeSelectorAdapter_picture">Picture</string>
-    <string name="AttachmentTypeSelectorAdapter_video">Video</string>
-    <string name="AttachmentTypeSelectorAdapter_audio">Audio</string>
+
+    <string name="PlayStoreListing">TextSecure is a security enhanced text messaging application that serves as a full replacement for the default text messaging application.  Messages to other TextSecure users are encrypted over the air, and all text messages are stored in an encrypted database on the device. If your phone is lost or stolen, your messages will be safe, and communication with other TextSecure users can\'t be monitored over the air.</string>
     
 </resources>