Add README stuff

Author: hit9

Diff for: .gitignore

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+.*.sw[opn]
+node_modules

Diff for: README.md

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+bytes.js
+========
+
+Utf8 bytes array from/to string.
+
+Install
+-------
+
+    npm install bytes.js
+
+Example
+-------
+
+```js
+var bytes = require('bytes.js');
+
+bytes.fromString('abc')  // [97, 98, 99]
+bytes.toString([97, 98, 99])  // 'abc'
+bytes.fromString('你好')  // [228, 189, 160, 229, 165, 189]
+bytes.toString([228, 189, 160, 229, 165, 189])  // '你好'
+```
+
+License
+--------
+
+MIT. Copyright (c) Chao Wang <[email protected]>

Diff for: package.json

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+{
+    "name": "bytes.js",
+    "version": "0.0.1",
+    "repository": {
+        "type": "git",
+        "url": "git://github.com/hit9/bytes.js"
+    },
+    "description": "Utf8 bytes array from/to string.",
+    "author": "hit9 <[email protected]>",
+    "keywords": ["utf8", "bytes"],
+    "main": "./bytes.js",
+    "scripts": {"test": "node test.js"},
+    "devDependencies": {"mut": "0.0.3"},
+    "license": "MIT"
+}

Diff for: test.js

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+// tests for `bytes.js`.
+var bytes = require('./bytes');
+var mut = require('mut');
+var assert = require('assert');
+
+var runTest = function(fn, cases) {
+  for (var i = 0; i < cases.length; i++) {
+    var item = cases[i];
+    var got = fn.apply(null, item.args);
+    assert.deepEqual(got, item.except);
+  }
+};
+
+mut('bytes.js', function(test) {
+  var fromStringCases = [
+    {args: ['~'], except: [0x7e]},
+    {args: ['1234'], except: [0x31, 0x32, 0x33, 0x34]},
+    {args: ['abc'], except: [0x61, 0x62, 0x63]},
+    {args: ['\u0129'], except: [0xc4, 0xa9]},
+    {args: ['\u07ff'], except: [0xdf, 0xbf]},
+    {args: ['你好'], except: [0xe4, 0xbd, 0xa0, 0xe5, 0xa5, 0xbd]},
+  ];
+  test('fromString', function(done) {
+    runTest(bytes.fromString, fromStringCases);
+    done();
+  });
+
+  var toStringCases = [
+    {args: [[0x7e]], except: '~'},
+    {args: [[0x31, 0x32, 0x33, 0x34]], except: '1234'},
+    {args: [[0x61, 0x62, 0x63]], except: 'abc'},
+    {args: [[0xc4, 0xa9]], except: '\u0129'},
+    {args: [[0xdf, 0xbf]], except: '\u07ff'},
+    {args: [[0xe4, 0xbd, 0xa0, 0xe5, 0xa5, 0xbd]], except: '你好'}
+  ]
+  test('toString', function(done) {
+    runTest(bytes.toString, toStringCases);
+    done();
+  });
+});