Add known-good and known-bad tests.

test.js

@@ -1,5 +1,5 @@
-scrypt = require("./");
-Promise = require("bluebird");
+var scrypt = require("./");
+var Promise = require("bluebird");
 
 /* Using Promises */
 
@@ -24,6 +24,18 @@ Promise.try(function(){
 	console.log("Number 2 was correct!");
 }).catch(scrypt.PasswordError, function(err){
 	console.log("Number 2 was wrong!", err);
+}).then(function(){
+	return scrypt.verifyHash("secretpassword", "c2NyeXB0AAwAAAAIAAAAAT8rdRZx8U1zzOnl0kor8x0MJK0SjXT277JgNYPWTzUiCchRWnTffPE23ZB8PwPDA4ckcSlDrNnrxMyH2fN2iMYbYS5sTnPHl2qLKgsiLsGr");
+}).then(function(){
+	console.log("Known-good hash was correct!");
+}).catch(scrypt.PasswordError, function(err){
+	console.log("Known-good hash was wrong!", err);
+}).then(function(){
+	return scrypt.verifyHash("wrongpassword", "c2NyeXB0AAwAAAAIAAAAAT8rdRZx8U1zzOnl0kor8x0MJK0SjXT277JgNYPWTzUiCchRWnTffPE23ZB8PwPDA4ckcSlDrNnrxMyH2fN2iMYbYS5sTnPHl2qLKgsiLsGr");
+}).then(function(){
+	console.log("Known-bad hash was correct!");
+}).catch(scrypt.PasswordError, function(err){
+	console.log("Known-bad hash was wrong!", err);
 });
 
 /* Using nodebacks */