added cli tool

bin/btoa.js

@@ -0,0 +1,10 @@
+#!/usr/bin/env node
+/*jshint strict:true node:true es5:true onevar:true laxcomma:true laxbreak:true eqeqeq:true immed:true latedef:true*/
+(function () {
+  "use strict";
+
+  var btoa = require('../index')
+    ;
+
+  console.log(btoa(process.argv[2]));
+}());

package.json

@@ -6,13 +6,17 @@
     "type": "git",
     "url": "git://github.com/coolaj86/node-browser-compat.git"
   },
-  "keywords"      : ["btoa", "browser"],
+  "keywords": [
+    "btoa",
+    "browser"
+  ],
   "author": "AJ ONeal <coolaj86@gmail.com> (http://coolaj86.info)",
   "engines": {
     "node": ">= 0.4.0"
   },
-  "dependencies"  : {
+  "bin": {
+    "btoa": "bin/btoa.js"
   },
   "main": "index",
-  "version"       : "1.0.0"
+  "version": "1.0.1"
 }