Update README.md

README.md

@@ -2,6 +2,28 @@
 > Find usernames across over 75 social networks 
 
 <p align="center">
-<img src="preview.png">
+<img src="sherlock_preview.png">
 </a>
 </p>
+
+## Installation
+
+```bash
+# clone the repo
+$ git clone https://github.com/sdushantha/sherlock.git
+
+# change the working directory to sherlock
+$ cd sherlock
+
+# install the requirements
+$ pip3 install -r requirements.txt
+```
+
+## Usage
+Just run ```python3 sherlock.py```
+
+
+## License
+MIT License
+
+Copyright (c) 2018 Siddharth Dushantha