multi-device: add ability to export Ring account

This patch adds a Devices panel for Ring accounts.
This panel contains the list of devices linked with this Ring account,
and the possibility to export the Ring account on the DHT to setup a new
device

Change-Id: I7281b03d4376fbfc2d74c4e520b8cd0726b9166d
Tuleap: #959
diff --git a/src/AccDevicesVC.h b/src/AccDevicesVC.h
new file mode 100644
index 0000000..3ae4c2d
--- /dev/null
+++ b/src/AccDevicesVC.h
@@ -0,0 +1,26 @@
+/*
+ *  Copyright (C) 2016 Savoir-faire Linux Inc.
+ *  Author: Alexandre Lision <alexandre.lision@savoirfairelinux.com>
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301 USA.
+ */
+
+#import <Cocoa/Cocoa.h>
+#import <account.h>
+@interface AccDevicesVC : NSViewController
+
+@property Account* account;
+
+@end