Added new example

examples/TOTP-verify.js

@@ -0,0 +1,33 @@
+
+var notp = require('../index'),
+    t2 = require('thirty-two'),
+    K = '12345678901234567890',
+	b32 = t2.encode(K);
+
+console.log('Click on this link to gennerate a QR code, and use Google Authenticator on your phone to read it:');
+console.log('http://qrcode.kaywa.com/img.php?s=8&d=' + encodeURIComponent('otpauth://totp/notp@example.com?secret=' + b32));
+verify();
+
+function verify() {
+    ask('Enter a code to verify', function(code) {
+        if(notp.totp.verify(code, K, {})) {
+            console.log('Success!!!');
+        }
+        console.log(notp.totp.verify(code, K, {}));
+        verify();
+    });
+}
+
+
+
+function ask(question, callback) {
+    var stdin = process.stdin, stdout = process.stdout;
+
+    stdin.resume();
+    stdout.write(question + ": ");
+
+    stdin.once('data', function(data) {
+        data = data.toString().trim();
+        callback(data);
+    });
+}