add setFromObj and getEncryptedObj to storage classes

This is so that you can export the file from the browser and use the same file
in the wallet file from the command-line. I have made encryption work
equivalently between the browser and node.

package.json

@@ -36,6 +36,7 @@
     "soop": "~0.1.5",
     "bitcore": "git://github.com/maraoz/bitcore.git#5e636f6b9c7f8e629b1a502025556e886c3b75e1",
     "chai": "~1.9.1",
-    "sinon": "~1.9.1"
+    "sinon": "~1.9.1",
+    "node-cryptojs-aes": "=0.4.0"
   }
 }