Add devices.destroy API call

oauth3.dns.js

@@ -71,6 +71,21 @@ OAUTH3.api['devices.detach'] = function (providerUri, opts) {
   });
 };
 
+OAUTH3.api['devices.destroy'] = function (providerUri, opts) {
+  var session = opts.session;
+  var device = opts.device;
+
+  return OAUTH3.request({
+    url: OAUTH3.url.normalize(providerUri)
+      + '/api/com.daplie.domains/accounts/' + session.token.sub
+			+ '/devices/' + device
+  , method: 'DELETE'
+  , session: session
+  }, {}).then(function (res) {
+    return res.data.device || res.data;
+  });
+};
+
 OAUTH3.api['dns.set'] = function (providerUri, opts) {
   var session = opts.session;
   var tld = opts.tld;