fix issues with ConnectionTor example and Connection class

examples/ConnectionTor.js

@@ -1,5 +1,5 @@
-var Peer       = require('../Peer');
-var Connection = require('../Connection');
+var Peer       = require('../lib/Peer');
+var Connection = require('../lib/Connection');
 var dns        = require('dns');
 
 // get a peer from dns seed

lib/Connection.js

@@ -18,7 +18,7 @@ var Parser          = imports.Parser || require('../util/BinaryParser');
 var buffertools     = imports.buffertools || require('buffertools');
 var doubleSha256    = imports.doubleSha256 || util.twoSha256;
 var SecureRandom    = imports.SecureRandom || require('./SecureRandom');
-var nonce           = function() {return SecureRandom.getPseudoRandomBuffer(8)};
+var nonce           = SecureRandom.getPseudoRandomBuffer(8);
 
 var BIP0031_VERSION = 60000;