Added license, readme, and instructions to source code

LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2016 Charles Hill
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

README.md

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+# Cross-site Scripting (XSS)
+
+Example cross-site scripting vulnerabilities in action.
+
+
+## Getting Started
+
+The first step before you can start the node app is to install all the necessary node module dependencies for the project. Run the following command from your terminal:
+```
+npm install
+```
+
+Start the normal web server using node:
+```
+node server.js
+```
+
+Once you have started the server, navigate to the following link in your browser:
+
+[http://localhost:3000/](http://localhost:3000/)
+
+You should see a simple search form. Enter some text and hit enter or click the search button. The search results are dummy data that will never change. But, notice how the text you entered is shown in the page. This form is vulnerable to an XSS attack.
+
+Look at the source code of the HTML page. You should see some comments with some example search queries to use. Follow the instructions in the source to see if you can get the XSS attacks to work.

public/index.html

@@ -14,6 +14,12 @@
 	<script>
 
 		/*
+			To try out these XSS attacks:
+				1) Open the developer tools in your browser (F12).
+				2) Use the JavaScript console to run the following:
+					encodeURIComponent('PASTE THE XSS ATTACK HERE');
+				3) Copy and paste the text from the console to the address bar. Replace the value for the q parameter with the encoded XSS attack text.
+
 			Proof of concept:
 			<img src="does-not-exist" onerror="alert(\'hi\')">