Merge pull request #404 from abhi2694/readme

Added contribution instructions in Readme

Author: amritansh22

Diff for: README.md

@@ -15,3 +15,13 @@ Anyone can contribute to this repositry.
 <li>Create a pull request</li>
 <li>Star the repository to show your support</li>
 </ul>
+
+## Instructions
+Create a folder for the topic you wish to contribute in and add the respective files in that particular folder.
+If a folder for a particular Data Structure or Algorithm exists. Add your codes in that folder itself.
+If a folder already exists, add your codes to it.
+
+### Additional Notes
+* Code should be properly commented so as to ensure it's readability.
+* If you've added code that should be tested, add tests as comments. 
+* Make sure your code is properly formatted.