Update README with usage examples

Author: remarkablemark

README.md

@@ -4,8 +4,9 @@ An HTML to React parser.
 
 ```js
 var Parser = require('html-react-parser');
-var reactElement = Parser('<p>Hello, world!</p>');
+// Parser(htmlString[, options]);
 
+var reactElement = Parser('<p>Hello, world!</p>');
 // ReactDOM.render(reactElement, node);
 ```
 
@@ -15,6 +16,39 @@ var reactElement = Parser('<p>Hello, world!</p>');
 $ npm install html-react-parser
 ```
 
+## Usage
+
+Render to DOM:
+
+```js
+var Parser = require('html-react-parser');
+var ReactDOM = require('react-dom');
+
+// single element
+ReactDOM.render(
+    Parser('<p>single</p>'),
+    document.getElementById('single')
+);
+
+// adjacent elements
+ReactDOM.render(
+    React.createElement('div', {}, Parser('<p>one</p><p>two</p>'))
+    document.getElementById('adjacent')
+);
+
+// nested elements
+ReactDOM.render(
+    Parser('<ul><li>inside</li></ul>'),
+    document.getElementedById('nested')
+);
+
+// attributes are preserved
+ReactDOM.render(
+    Parser('<section id="foo" class="bar baz" data-qux="42">look at me now</section>'),
+    document.getElementById('attributes')
+);
+```
+
 ## Testing
 
 ```sh