[CHORE] Crypt exported by name

src/js/ripple/blob.js

@@ -1,4 +1,4 @@
-var crypt   = require('./crypt');
+var crypt   = require('./crypt').Crypt;
 var request = require('superagent');
 var async   = require('async');
 var extend  = require("extend");

src/js/ripple/crypt.js

@@ -477,4 +477,4 @@ var dateAsIso8601 = (function () {
 })();
 
 
-module.exports = Crypt;
+module.exports.Crypt = Crypt;

src/js/ripple/vaultclient.js

@@ -1,6 +1,6 @@
 var AuthInfo   = require('./authinfo').AuthInfo;
 var blobClient = require('./blob').BlobClient;
-var crypt      = require('./crypt');
+var crypt      = require('./crypt').Crypt;
 
 
 function VaultClient(opts) {