Add read me file.

README.md

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+# crypto-js
+
+Modularized port of googlecode project crypto-js.
+
+## Node.js (Install)
+
+Requirements:
+* Node.js
+* npm (Node.js package manager)
+
+```bash
+npm install crypto-js
+```
+
+### USE
+
+```javascript
+var AES = require("crypto-js/aes");
+var SHA256 = require("crypto-js/sha256");
+```
+
+## Client (browser)
+
+### USE
+
+```javascript
+require(["crypto-js/aes", "crypto-js/sha256"], function (AES, SHA256) {
+
+});
+```
+
+## API
+
+See: https://code.google.com/p/crypto-js