Use promise on ipns namesystem

lib/modules/ipfs/embarkjs/name.js

@@ -5,12 +5,13 @@ __embarkIPFS.resolve = function (name, callback) {
     return callback(connectionError);
   }
 
-  this._ipfsConnection.name.resolve(name, (err, res) => {
-    if (err) {
+  this._ipfsConnection.name.resolve(name)
+    .then(res => {
+      callback(null, res.Path);
+    })
+    .catch(() => {
       return callback(name + " is not registered");
-    }
-    callback(err, res.value);
-  });
+    });
 };
 
 __embarkIPFS.register = function(addr, options) {
@@ -18,13 +19,13 @@ __embarkIPFS.register = function(addr, options) {
     return new Error('No IPFS connection. Please ensure to call Embark.Names.setProvider()');
   }
 
-  return this._ipfsConnection.name.publish(addr, options, function (err, res) {
-    if (err) {
-      return new Error('No IPFS connection. Please ensure to call Embark.Names.setProvider()');
-    }
-
-    return `https://gateway.ipfs.io/ipns/${res.name}`;
-  });
+  this._ipfsConnection.name.publish("/ipfs/" + addr, options)
+    .then(res => {
+      return `https://gateway.ipfs.io/ipns/${res.name}`;
+    })
+    .catch((err) => {
+      return new Error('Unexpected Error: ' + err);
+    });
 };
 
 __embarkIPFS.lookup = function () {

templates/demo/config/namesystem.js

@@ -1,6 +1,6 @@
 module.exports = {
   default: {
-    available_providers: ["ens"],
+    available_providers: ["ens", "ipns"],
     provider: "ens",
     register: {
       rootDomain: "embark.eth",