fix references

lib/pubkey.js

@@ -1,4 +1,4 @@
-var Point = require('./point');
+var Point = require('./crypto/point');
 var bn = require('./bn');
 var privkey = require('./privkey');
 

test/address.js

@@ -1,5 +1,4 @@
 var should = require('chai').should();
-var constants = require('../lib/constants');
 var Pubkey = require('../lib/pubkey');
 var Address = require('../lib/address');
 var Script = require('../lib/script');