fix capitalization error on case-sensitive filesystems

test/stealthmessage.js

@@ -1,7 +1,7 @@
 var Keypair = require('../lib/keypair');
 var StealthMessage = require('../lib/expmt/stealthmessage');
 var Stealthkey = require('../lib/expmt/stealthkey');
-var StealthAddress = require('../lib/expmt/stealthAddress');
+var StealthAddress = require('../lib/expmt/stealthaddress');
 var KDF = require('../lib/kdf');
 var Hash = require('../lib/hash');
 var should = require('chai').should();