Adds testcases and working examples.

.gitignore

@@ -0,0 +1 @@
+node_modules

examples/rfid.js

@@ -8,7 +8,7 @@ then logs its UID to the console.
 // http://creativecommons.org/publicdomain/zero/1.0/
 
 var tessel = require('tessel');
-var rfid = require('../').use(tessel.port('A')); // Replace '../' with 'rfid-pn532' in your own code
+var rfid = require('../').use(tessel.port['A']); // Replace '../' with 'rfid-pn532' in your own code
 
 rfid.on('ready', function (version) {
   console.log('Ready to read RFID card');

package.json

@@ -4,10 +4,18 @@
   "description": "Library to run the PN532 RFID Reader",
   "main": "index.js",
   "scripts": {
-    "test": "echo \"Error: no test specified\" && exit 1"
+    "test": "./testsuite.js"
   },
   "hardware": {
-    "./examples": false
+    "./examples": false,
+    "tape": false,
+    "tap": false,
+    "shelljs": false
+  },
+  "devDependencies": {
+    "tape": "~2.3.2",
+    "tap": "git+https://github.com/tcr/node-tap.git#3cb76e",
+    "shelljs": "~0.3.0"
   },
   "repository": "",
   "author": "Jon McKay <jon@technical.io>",

test/readcard.js

@@ -0,0 +1,25 @@
+// Any copyright is dedicated to the Public Domain.
+// http://creativecommons.org/publicdomain/zero/1.0/
+
+var portname = process.argv[2] || 'A';
+console.log('# connecting to port', portname);
+
+var tessel = require('tessel');
+var rfid = require('../').use(tessel.port[portname]);
+
+console.log('1..2');
+
+rfid.on('ready', function (version) {
+  console.log('# ready to read RFID card');
+  console.log('ok')
+
+  rfid.on('data', function(uid) {
+  	console.log('# uid', uid);
+    console.log(uid.length == 4 ? 'ok' : 'not ok', '- length of returned data');
+    rfid.disable();
+  });
+});
+
+rfid.on('error', function (err) {
+  console.log('not ok', '-', err);
+})

testsuite.js

@@ -0,0 +1,10 @@
+#!/usr/bin/env node
+
+require('shelljs/global');
+
+var port = process.env.RFID_PORT || 'A';
+var cmd = './node_modules/.bin/tap -e "tessel run {} ' + port + '" test/*.js';
+
+// execute
+cd(__dirname)
+process.exit(exec(cmd).code);