add license

README.md

@@ -8,60 +8,72 @@ For node.js, you can use this command to install:
 
 ## Usage
 If you use node.js, you should require the module first:
-
-    var md5 = require('js-md5');
-
+```JavaScript
+md5 = require('js-md5');
+```
 And you could use like this:
-
-    md5('Message to hash');
-
+```JavaScript
+md5('Message to hash');
+```
 ## Example
 Code
-
-    md5('');
-    md5('The quick brown fox jumps over the lazy dog');
-    md5('The quick brown fox jumps over the lazy dog.');
+```JavaScript
+md5('');
+md5('The quick brown fox jumps over the lazy dog');
+md5('The quick brown fox jumps over the lazy dog.');
+```
 Output
 
     d41d8cd98f00b204e9800998ecf8427e
     9e107d9d372bb6826bd81d3542a419d6
     e4d909c290d0fb1ca068ffaddf22cbd0
 
-It also support UTF-8 encoding:
+It also supports UTF-8 encoding:
 
 Code
-
-    md5('中文');
+```JavaScript
+md5('中文');
+```
 Output
 
     a7bac2239fcdcb3a067903d8077c4a07
 
 ## Tests
-You can open `tests/index.html` in browser or use node.js to run `node tests/node-test.js` for test.
+You can open `tests/index.html` in browser or use node.js to run test
 
-You also could use `npm test` instance of `node tests/node-test.js`.
+    node tests/node-test.js
+
+or
+
+    npm test
 
 ## Extensions
 ### jQuery
 If you prefer jQuery style, you can add following code to add a jQuery extension.
 
 Code
-
-    jQuery.md5 = md5
+```JavaScript
+jQuery.md5 = md5
+```
 And then you could use like this:
-
-    $.md5('message');
+```JavaScript
+$.md5('message');
+```
 ### Prototype
 If you prefer prototype style, you can add following code to add a prototype extension.
 
 Code
-
-    String.prototype.md5 = function() {
-      return md5(this);
-    };
+```JavaScript
+String.prototype.md5 = function() {
+  return md5(this);
+};
+```
 And then you could use like this:
-
-    'message'.md5();
+```JavaScript
+'message'.md5();
+```
+## License
+The project is released under the [MIT license](http://www.opensource.org/licenses/MIT).
 
 ## Contact
 The project's website is located at https://github.com/emn178/js-md5