invites: make temporary invite files invisible

SparkleShare/Linux/sparkleshare.in

@@ -64,7 +64,7 @@ case $1 in
   open|--open)
     invite=`date -u +%N`
     open=`echo $2 | sed 's/sparkleshare:\/\/addProject\///'`
-    curl --insecure --output ~/SparkleShare/$invite.xml $open
+    curl --insecure --output ~/SparkleShare/.$invite.xml $open
     ;;
   *)
     mono "@expanded_libdir@/@PACKAGE@/SparkleShare.exe" --help

SparkleShare/Windows/SparkleShareInviteOpener/sparkleshare-invite-opener.cs

@@ -59,6 +59,7 @@ namespace SparkleShare {
 
             if (xml.Contains ("<sparkleshare>")) {
                 File.WriteAllText (target_path, xml);
+                File.SetAttributes (target_path, FileAttributes.Hidden);
                 Console.WriteLine ("Downloaded invite: " + url);
             }
         }