Update dependencies

.travis.yml

@@ -1,9 +1,18 @@
 language: node_js
 node_js:
-- '0.10'
+- '6.9.0'
 services:
 - mysql
 - redis
+env:
+  - CXX=g++-4.8
+addons:
+  apt:
+    sources:
+    - ubuntu-toolchain-r-test
+    packages:
+    - gcc-4.8
+    - g++-4.8
 notifications:
   slack:
     secure: SlpY9HUA8yJveU7VJTAcJpCMSxMD9+4MvEktFvv4RdwhfGQMmmWdHUk6kIa/l52TvFRRzUMGaD93N00E0b3eTs1OhTEhubLQ62NBLc5r6UdQ7WO0oVsO6bQJIOFgV7imEdxu5wtLyn7+lFCCA+n6fExnHDy04V1D+psvHEZvoAg=

lib/util/stellar-address.js

@@ -13,5 +13,5 @@ module.exports.addressFromPublicKey = function(publicKeyString) {
 module.exports.newAddressFromPublicKey = function(publicKeyString) {
   var publicKeyBytes = new Buffer(publicKeyString, "base64");
   var keyPair = new StellarBase.Keypair({publicKey: publicKeyBytes});
-  return keyPair.address();
+  return keyPair.publicKey();
 };